The Italian believes his side would have stood a better chance of lifting the Premier League title this term with the Argentine forward at their disposal
City trail rivals Manchester United by three points at the league's summit ahead of the Red Devils' visit to Etihad Stadium on Monday.
But, whilst his side could go top by virtue of goal difference with a win, Mancini believes City could have been in an even better position had they had their Argentine forward throughout the season.
"It's clear that with him we would have had a better chance," Mancini told France Football.
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Tevez and Mancini were embroiled in a war of words over the Argentine's perceived reluctance to come off the bench during a Champions League tie against Bayern Munich back in October.
This confrontation resulted in Tevez going on strike back in his homeland before January moves to AC Milan and Paris Saint-Germain fell through.
However, the 47-year-old boss insists he retains a good working relationship with the former West Ham striker and claims he was under no pressure to bring him back into the team.
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"The board have never imposed anything on me. To play Tevez again was a logical choice because he didn't leave in the January transfer window.
"He's a player of great quality, one of the best strikers in the world, and we thought he could help us
"I have had a good attitude with him like with everyone else. It's not us who wanted him to go to Argentina in November.
"I was very sorry with that situation. I found it strange. I don't know why all this happened."
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