His club is one of four chasing the Spanish title, including Barcelona, Real Madrid and Sevilla. And last night Valencia progressed to the quarter finals of the Champions League ... but there were amazing scenes as players battled on the pitch and in the tunnel.
UEFA have opened an investigation into the conduct of both Valencia and Internazionale following the post-match brawl.
Valencia substitute David Navarro sparked the melee after punching Inter's Nicolas Burdisso - breaking the Argentinian's nose in the process - with players from both teams (including Viana) quickly becoming involved.
Ex-Toon Player Involved In Fight!
The disruption continued in the tunnel with Inter players attempting to get into the Valencia dressing room to confront Navarro.
A UEFA spokesman said: "An investigation has been opened for the incidents which happened last night against both clubs.
"A decision is expected at the next meeting of the UEFA disciplinary body on March 22nd."
The second leg of the last-16 tie finished goalless with Valencia progressing on away goals following the 2-2 draw at the San Siro on February 21.
Back to Viana ... why do players leave our club and turn into world class players, when they produce NOTHING at St James' Park. Viana is just one of many. Look no further than Jon Dahl Tomasson. He couldn't hit a cow's arse with a banjo when he was at Newcastle, but he has won just about everything in the game since he left.
2002/5 H.Viana 18/33 4 Portuguese international, joined Newcastle for £8.5m when only 19. Usually plays on the left of midfield but says he prefers central midfield. Described by Bobby Robson: "He will become a legend". Sadly it wasn't with Newcastle. Went back to Sporting Lisbon on a season-long loan in 2004. And left the club in a ridiculous cut price deal in 2005.
1997/98 J.D.Tomasson 26/8 4
Jon Dahl signed from SC Heerenveen in Holland for £2.2m having topped the Dutch goalscoring league in 1998/99. Was highly rated and scored twice in a pre-season friendly in Ireland when he first signed and looked a great buy. But he never adapted to the Premiership and struggled straight away. Said he was played out of position, but he never looked sharp wherever he played. Danish international who returned to Dutch football. Then helped Denmark win the European Championship and was a huge star in Italian football with Milan.