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Carlos Tevez made his return to the Manchester City first team against Chelsea this week, coming off the bench to provide the game-winning assist.
At a glance, things are looking rosy for City at this point. City won, and Tevez's return went well; not only did he provide an assist, but he caused no trouble and was not hounded by the fans.
However, Tevez's return could prove to be City's downfall. The Argentinian is a fantastic player, but his presence could prove to be divisive, both for fans and the players.
City are right to use Tevez; they need to use as many of their best players as they can if they are to see off Manchester United. However, there are bound to be players, maybe even coaches, who are not ready to put aside personal grudges for the good of the squad. That is just human nature.
The last thing City need right now is a training ground bust-up. That is exactly the type of needless incident that could destroy morale and derail a title bid.
Sir Alex Ferguson suggested that Tevez's return reeks of desperation on the part of City. While that is taking it too far, it could prove to be a useful psychological card in United's arsenal. Does Roberto Mancini think his squad isn't good enough to get the job done without Tevez?
For all of the good he might do on the pitch, Tevez is perfectly capable of doing far more damage behind the scenes, regardless of whether or not he is sincerely sorry and looking for a fresh start.