The debate over Tevez's reported reluctance to come off the bench to play against Bayern Munich in midweek has dominated the headlines over the last few days.
Mancini revealed following the 2-0 Champions League defeat in Germany that Tevez had ignored his instructions to come on during the second half as City tried to get back in the game.
The City chief was left fuming by Tevez and claimed the Argentine was 'finished' with the club as a result of his actions.
Tevez in a statement blamed "confusion on the bench" for the "misunderstanding", denying he refused to play in Munich.
The 27-year-old has been suspended for two weeks by City as they investigate the chain of events before making a decision on the future of the forward.
Mancini is trying to draw a line under the unsavoury incident and insists he is focused on helping City achieve success.
"It is finished," said Mancini.
"I am the manager, our focus is regarding the Premier League, the Champions League and the FA Cup.
"Other things - it is not my problem."