Coloccini has told the club he wants to return to his native Argentina in this month’s transfer window.
And talks had been planned this week with the club’s captain, who wants to leave for what have been described as “personal matters”.
However, it is understood the meeting between Coloccini, his agent and United’s hierarchy might not be held until early next week, with the Argentina international likely to lead the club against Reading in the meantime.
Newcastle hope to persuade Coloccini to stay until the end of the season, when the situation could be reassessed.
The club is understandably unwilling to write off its investment in the influential defender – who signed a new four-year deal last season – and allow him to join Argentinian club San Lorenzo, who are hopeful his contract will be “rescinded”.
Contrary to speculation, Coloccini did not say his goodbyes to his team-mates this week.
Instead, the 30-year-old has trained normally with his colleagues ahead of the Reading game, which fans are hoping will not prove to be his final appearance at St James’s Park.
United manager Alan Pardew, already looking to sign one centre-half in this month’s transfer window, wouldn’t be drawn on speculation over Coloccini’s future last weekend.
NEWCASTLE UNITED FC 2012/13
Newcastle United Fixtures
January 19 2013 15:00 Reading (H)
Tuesday January 29 2013 19:45 v Aston Villa (A)
Saturday February 2 2013 15:00 v Chelsea (H)
Saturday February 9 2013 12:45 v Tottenham (A)
Thursday February 14 2013 v Metalist (H)
Thursday February 21 2013 v Metalist (A)
Saturday February 23 2013 15:00 v Southampton (H)
PREMIERSHIP
NORWICH 0 NEWCASTLE 0
Krul; Debuchy, Williamson, Coloccini, Santon; Anita (Bigirimana, 84), Perch; Obertan (Cabaye, 57), Marveaux, Gutierrez; Cisse.
Subs not used: Harper, Amalfitano, Sammy Ameobi, Ranger, Tavernier.
NEWCASTLE 1 EVERTON 2 (Cisse)
Krul, Perch (87' Ranger), Williamson, Coloccini, Santon, Obertan (65' Bigirimana), Anita, Tiote (79' Sammy Ameobi), Marveaux, Shola Ameobi, Cisse
Subs: Elliot, Ferguson, Tavernier, Abeid
ARSENAL 7 NEWCASTLE 3 (Ba 2, Marveaux)
Krul, Simpson (82' Ferguson), Coloccini, Perch, Santon, Obertan, Bigirimana (82' Shola Ameobi), Tiote, Marveaux (88' Tavernier), Ba, Cisse.
Subs: Harper, Sammy Ameobi, Mehdi Abeid, Streete.
MAN UTD 4 NEWCASTLE 3 (Perch, Evans og, Ba)
Krul, Simpson, Williamson, Coloccini, Santon, Anita, Perch, Bigirimana (65' Obertan), Cisse (79' Sammy Ameobi), Ba (71' Shola Ameobi), Marveaux
Subs: Elliot, Ferguson, Tavernier,Campbell
NEWCASTLE 1 QPR 0 (Shola Ameobi)
Krul, Simpson, Coloccini, Williamson, Santon, Anita, Tiote (77' Marveaux), Perch, Gutierrez (60' Obertan), Ba, Cisse (61' Shola Ameobi).
Subs: Harper, Bigirimana, Sammy Ameobi, Ferguson.
NEWCASTLE 1 MAN CITY 3 (Ba)
Krul, Simpson (82' Ferguson), Williamson, Coloccini, Santon, Perch, Tiote (74' Marveaux), Anita, Gutierrez, Cisse (79' Shola Ameobi), Ba.
Subs: Elliot, Bigirimana, Sammy Ameobi, Tavernier
FULHAM 2 NEWCASTLE 1 (Ben Arfa)
Krul, Simpson, Coloccini, Williamson, Santon, Gutierrez, Tiote (86' Bigirimana), Anita (86' Marveaux), Ben Arfa (70' Shola Ameobi), Cisse, Ba.
Subs: Harper, Perch, Ferguson, Tavernier
NEWCASTLE 3 WIGAN 0 (Ba 2 - 1 pen, Bigirimana)
Krul, Simpson, Williamson, Coloccini, Santon (49' Ferguson), Marveaux, Tiote (46' Bigirimana) Anita, Gutierrez (75' Sammy Ameobi), Ba, Cisse
Subs: Harper, Shola Ameobi, Ranger, Tavernier
STOKE 2 NEWCASTLE 1 (Cisse)
Krul, Simpson, Coloccini, Williamson, Santon, Anita (87' Sammy Ameobi), Perch, Tiote, Gutierrez, Ba, Cisse (87' Ranger).
Subs: Elliot, Bigirimana, Marveaux, Ferguson, Tavernier
SOUTHAMPTON 2 NEWCASTLE 0
Krul, Simpson, S Taylor (90+1' Perch), Williamson, Santon, Anita (66' Marveaux), Tiote, Gutierrez, Ferguson (46' Sammy Ameobi), Ba, Cisse.
Subs: Harper, Bigirimana, Ranger, Tavernier
NEWCASTLE 1 SWANSEA 2 (Ba)
Krul, Simpson (74' Bigirimana), S Taylor, Williamson, Santon, Ben Arfa, Anita, Tiote, Ferguson (46' Shola Ameobi), Sammy Ameobi (79' Marveaux), Ba.
Subs: Elliot, Amalfitano, Tavernier,Abeid
NEWCASTLE 0 WEST HAM 1
Krul, Simpson (79' Obertan), Steven Taylor, Williamson, Santon, Ben Arfa, Cabaye, Gutierrez (24' Anita), Ferguson, Cisse (45+5' Shola Ameobi), Ba
Subs:Elliot, Amalfitano, Bigirimana, Marveaux.
LIVERPOOL 1 NEWCASTLE 1 (Cabaye)
Krul, Anita, S Taylor, Coloccini, Santon, Perch (26' Simpson), Cabaye (68' Ferguson), Gutierrez, Ben Arfa, Cisse, Ba (49' Sammy Ameobi).
Subs: Harper, Williamson, Shola Ameobi, Obertan.
NEWCASTLE 2 WEST BROM 1 (Ba, Cisse)
Krul, Simpson (61 Cisse), Coloccini, Williamson, Santon, Ben Arfa, Cabaye, Perch, Gutierrez, Ba (72 Sammy Ameobi), Shola Ameobi (61 Obertan).
Subs: Harper, Anita, Steven Taylor, Ferguson.
SUNDERLAND 1 NEWCASTLE UTD 1 (Cabaye)
Krul,Simpson, Williamson, Coloccini (79' S Taylor) Santon, Gutierrez, Cabaye, Tiote, Ben Arfa (83' Obertan), Ba, Shola Ameobi (38' Perch).
Subs: Harper, Anita, Cisse, Ferguson
NEWCASTLE UTD 0 MAN UTD 3
Harper, Santon, Perch, Williamson, Ferguson (63' Anita), Ben Arfa, Tiote (80' Bigirimana), Cabaye, Gutierrez, Cisse (63' Shola Ameobi), Ba
Subs: Alnwick, Simpson, Obertan, Sammy Ameobi
READING 2 NEWCASTLE 2 (Ba 2)
Harper, Perch, Williamson, Steven Taylor (Tavernier 56), Santon, Ben Arfa, Tiote, Bigirimana (Ferguson 70), Gutierrez, Cisse (Shola Ameobi 69), Ba.
Subs not used: Elliot, Anita, Obertan, Sammy Ameobi.
NEWCASTLE 1 NORWICH 0 (Ba)
Harper, Perch, Williamson, Steven Taylor, Santon, Ben Arfa (Shola 85mins), Anita (Tiote 76 mins), Cabaye, Jonas, Cisse (Obertan 70 mins), Ba
Subs unused: Elliot, Tavernier, Bigirimana, Sammy Ameobi
EVERTON 2 NEWCASTLE 2 (Ba 2)
Harper; Perch, Williamson, Taylor, Santon; Anita, Cabaye (Bigirimana 93), Gutierrez; Marveaux (Ba 46), Ben Arfa; Cissé (Shola Ameobi 80).
Substitutes not used Elliot (g), Gosling, Obertan, Tavernier.
NEWCASTLE 1 ASTON VILLA 1 (Ben Arfa)
Krul, Simpson (Bigirimana 38), Steven Taylor, Coloccini, Santon, Ben Arfa, Cabaye, Anita, Gutierrez (Marveaux 86), Ba (Obertan 86), Cisse
Subs not used: Harper, Williamson, Gosling, Amalfitano
CHELSEA 2 NEWCASTLE 0
Krul, Simpson (Ryan Taylor 64), Steven Taylor, Coloccini, Santon (Marveaux 74), Ben Arfa, Anita, Cabaye (Perch 77), Gutierrez, Ba, Cisse
Subs not used: Harper, Williamson, Gosling, Obertan
NEWCASTLE 2 SPURS 1 (Ba, Ben Arfa pen)
Krul; Simpson, S Taylor, Perch, Santon; Ben Arfa, Cabaye (Anita, 71), Tiote, Gutierrez; Cisse, Ba (Obertan, 85). Subs not used: Harper; R Taylor, Williamson, Gosling, Amalfitano
FA CUP
BRIGHTON 2 NEWCASTLE 0
Elliot, Tavernier, Perch (46' Dummett), Williamson, Santon, Anita, Abeid (46' Ranger), Bigirimana, Obertan (71' Marveaux), Shola Ameobi, Sammy Ameobi
Subs: Krul, Amalfitano, Ferguson, Campbell
EUROPA LEAGUE
BORDEAUX 2 NEWCASTLE 0
Elliot, Tavernier, Williamson (74' Coloccini), Perch, Ferguson, Abeid, Bigirimana, Ranger, Marveaux, Sammy Ameobi (46' Anita) Shola Ameobi (80' Cisse)
Subs: Krul, Simpson, Romain Amalfitano, Campbell
NEWCASTLE 1 MARITIMO 1
Krul, Simpson, S Taylor, Coloccini, Santon, Marveaux, Bigirimana, Anita, Sammy Ameobi (76' Abeid), Ben Arfa (40' Ba), Cisse (50' Amalfitano)
Subs: Elliot, Williamson, Ferguson, Tavernier'.
CLUB BRUGGE 2 NEWCASTLE 2 (Anita, Shola Ameobi)
Krul, Anita, Williamson (58' Steven Taylor), Coloccini, Tavernier, Tiote, Sammy Ameobi (83' Amalfitano), Marveaux, Bigirimana (72' Cabaye), Obertan, Shola Ameobi
Sub: Elliot, Santon, Cisse, Shane Ferguson
NEWCASTLE 1 CLUB BRUGGE 0 (Obertan)
Harper, Perch, Santon, Steven Taylor, Ferguson 80 (Cabaye), Obertan, Tiote, Bigirimana, Anita 46' (Shola Ameobi), Sammy Ameobi 73' (Coloccini), Cisse
Subs: Krul, Ben Arfa, Ba, Campbell
NEWCASTLE 3 BORDEAUX 0 (Shola Ameobi, Henrique og), Cisse)
Elliot (Harper, 46 ); Simpson, Williamson, Perch, Ferguson; Anita, Tiote (Gosling, 71), Cabaye (Bigirimana, 61); Cisse, Ameobi, Obertan.
MARITIMO 0 NEWCASTLE 0
Elliot, Santon, Williamson, Perch, S Taylor, Gosling, Amalfitano (Ferguson 76), Bigirimana, Obertan (Marveaux 80), Vuckic (Sami Ameobi 53), Shola Ameobi.
Subs (not used): Harper (gk), Tavernier, Abeid, Campbell
NEWCASTLE 1 ATROMITOS 0 (Vuckic)
Krul, Simpson, Coloccini, Williamson, Ryan Taylor (11 Vuckic), Obertan, Bigirimana, Perch (59 Tavernier), Marveaux (91 Amalfitano), Gosling, Ba.
Subs: Harper, Cabaye, Cisse, Campbell.
ATROMITOS 1 NEWCASTLE 1 (R Taylor)
Harper; Tavernier, Williamson, Perch, R Taylor; Bigirimana, Anita; Obertan, Gosling (Amalfitano, 64), Marveaux (Gutierrez, 71); Cisse (Campbell, 77). Subs not used: Krul, Santon, Cabaye, S Taylor.
LEAGUE CUP
MAN UTD 2 NEWCASTLE 1 (Cisse)
Elliot, Coloccini (Ferguson 61), Williamson, Perch, Tavernier, Gosling, Marveaux, Tioté (Bigirimana 71), Obertan, Vuckic (Cisse 81), Shola Ameobi.
Subs not used: Harper, Anita, Amalfitano, Sammy Ameobi.
PRE-SEASON
CARDIFF CITY 4 NEWCASTLE 1 (Shola Ameobi pen)
Krul, Simpson, Coloccini (Williamson 46), Steven Taylor (Gosling 63), Santon, Obertan (Campbell 83), Tiote (Amalfitano 71) , Gutiérrez, Marveaux (Vuckic 46), R Taylor (Perch 28), Shola Ameobi.
HARTLEPOOL 1 NEWCASTLE 5 (Shola Ameobi, Marveaux 2, Obertan, Vuckic)
Harper (Alnwick 82), Simpson (Good 72), Tavernier, Williamson, S.Taylor (Vuckic 46), Perch (R.Taylor 72), Gosling, Amalfitano (Santon 80), Marveaux (Obertan 78), Sh.Ameobi (Ben Arfa 46), Bigirimana (Abeid 59).
DEN HAAG 0 NEWCASTLE 0
Krul; S Taylor (Gosling 65), R Taylor (Perch 71), Coloccini, Santon (Simpson 80); Obertan (Bigirimana 71), Tiote (Ameobi 71), Vuckic (Williamson 65), Gutierrez; Ba (Amalfitano 82), Cisse
BRAGA 1 NEWCASTLE 2 (Ba, R Taylor)
Harper; Simpson, Tavernier, Coloccini, R.Taylor; Sammy Ameobi (Obertan 88), Tiote (Cabaye 70), Gutierrez, Marveaux; Cisse, Ba (Vuckic 85).
OLYMPIACOS 1 NEWCASTLE 1 (S Taylor)
Krul, Perch, Williamson, S.Taylor (Dummett 46), Santon, Obertan (Sammy Ameobi 72), Bigirimana, Gosling (Abeid 36), Amalfitano, Vuckic, Shola Ameobi (Cisse 72).
FENERBAHCE 1 NEWCASTLE 1 (Abeid)
Elliot, Simpson (Santon 68), Tavernier, Coloccini, R Taylor, Tiote (Bigirimana 59), Gosling (Abeid 73), Obertan (Shola Ameobi 75), Marveuax (Gutierrez 59), Vuckic (Sammy Ameobi 46), Ba (Cisse 68).
MONACO 0 NEWCASTLE 1 (Ba)
Harper, Santon (Ryan Taylor 57), Simpson, Williamson (Perch 46), Gutierrez, Amalfitano (Obertan 62), Abeid (Tavernier 46), Bigirimana (Tiote 62), Sammy Ameobi (Vuckic 46), Shola Ameobi (Gosling 62), Ba (Marveaux 78)
CHEMNITZER 1 NEWCASTLE 0
Elliot; Tavernier (Simpson, 70), Williamson, Perch, R Taylor (Santon, 70); Obertan (Gutierrez, 77), Abeid (Bigirimana, 70), Gosling, Amalfitano; Vuckic (Shola Ameobi, 70), Sammy Ameobi (Ba, 77). Sub not used: Harper.