Daily Mail: Taylor is understood to have had his jaw wired and Carroll, who is already facing a court case next month over an alleged serious assault in a Newcastle nightclub, is believed to have had an operation on his hand.
Sportsmail understands 20-year-old Carroll attacked Taylor before training yesterday morning after discovering the centre-back had received texts from a former partner.
The incredible story has echoes of the John Terry/ Wayne Bridge affair which rocked the England camp and the dressing rooms of Chelsea and Manchester City last month.
But this time the two players at the heart of the story are still in the same squad.
Carroll is accused of assault occasioning actual bodily harm against Michael Cook in the Blu Bambu club in December.
It was alleged in Newcastle Magistrates Court last month that Carroll smashed a glass into Mr Cook's face.
Carroll, who became a father in September, was also cautioned a year before his daughter was born for assault on a woman in Newcastle city centre.
Latest news ... from our message board - WALLSEND MAG:
Eyewitness account. This is the exact text I have recieved so excuse the fact that it's in text speak:
Rite, steven taylor was goin with andys lass 2yr ago b4 she got with andy, recently tayls has bn textn her, she apparently hasnt txt bk and tld hm 2 stop or she wud tel andy, so she did. Thn ths happend yest- andy walked up to him, sed tell is the truth or al hit ya..Tayls denied it.. Andy hit him.. Tayls went to the physio room to see the doc, andy followed him, full on scrap there
That is the text I recieved 15 mins ago word for word. Make of it what you will.