It has been expected that Tevez will leave Eastlands in January after the forward was accused of refusing to come on as a substitute against Bayern Munich in September.
Various clubs around the globe have expressed an interest in offering Tevez an escape route, but it appears the Argentina forward could yet be allowed to remain at City.
"Everything depends on Carlos," Mancini told Corriere della Sera. "If he apologises to the squad and to me then everything will be as before. If he doesn't then Tevez has a value that everyone knows and something will happen in January.
"He is totally unprepared and being badly advised. I don't want it to be like this and I would be the first to forgive him."
Tevez has been reluctant to apologise for his actions, although his advisor, Kia Joorabchian, has said the player is now happy to remain in England after his family moved over.