Fresh question marks have been raised over the harmony at Manchester City after Kolo Toure and Emmanuel Adebayor had to be pulled apart in training.
The pair, who were also team-mates at Arsenal, were eventually separated by ex-Gunner Patrick Vieira, Vincent Kompany and six other players.
The training ground bust-up comes just hours before the club's crucial showdown against title rivals Arsenal at Emirates Stadium.
It is not the first time spirit in the club's camp has been questioned after Mario Balotelli and Jerome Boateng also came to blows on the training ground.
And Adebayor also became embroiled in an on-field row with Kompany during the team's shock 2-1 Premier League defeat to Wolves in October.
City arrive at Arsenal on the back of three straight Premier League wins, although yet another squad altercation is unlikely to boost Roberto Mancini's hopes of silverware.
A City spokesman later told Sky Sports News that the training ground incident between the pair was 'not serious'.