Tevez is poised to make his first appearance for the club for six months on Wednesday, with Mancini expected to name him on the bench for the Premier League visit of Chelsea. The Argentinian has not played for City since falling into dispute with the club following the infamous Champions League defeat at Bayern Munich.
Carlos Tevez has scored in his last five Premier League appearances against Chelsea, but has not played since September.
After an unauthorised three-month absence in Argentina, the 28-year-old returned to training five weeks ago and apologised for his conduct, clearing the way for a return.
Tevez was inspirational as City won the FA Cup last season but Mancini believes his efforts are even eclipsing those of 12 months ago.