Samir Nasri has called on his Manchester City team-mates to welcome Carlos Tevez back into the fold following his apology on Tuesday.
Tevez attempted to build bridges at City when he released a statement expressing regret at his actions, having gone AWOL in Argentina for three months following a bust-up with manager Roberto Mancini.
It is not known whether Mancini will now allow Tevez back into the first-team squad - particularly after he accused Mancini of treating him like a dog during an outspoken television interview - but the Italian boss has intimated in the past that an apology would be a step in the right direction for the striker.
City are in Europa League action against Porto on Wednesday - a game which Tevez is ineligible for, as he has not been registered for the competition. City won the first leg 2-1 in Portugal.
And Nasri feels that Tevez has an integral part to play as City bid to get their hands on the two major trophies still available to them. "I think he is an important player for us, and [would be] for any team in Europe because he has quality ... We need his quality to win the league and Europa League," Nasri said.
The 24-year-old Frenchman is also determined to prove his move to Manchester City was not a mistake. He has completed the full 90 minutes just nine times for City but said: "It is always tough when you change and go to another team.
"Now I am starting to be settled and you will see a better Samir every week. You have to work when you don't feel well and you haven't produced what everyone expects from you. But I was always confident about my quality and you will see that.
"At Arsenal I was playing a little bit higher with three strikers and three midfielders. Here we play 4-4-2 so you have to work more defensively. But that doesn't matter. I have understood that and I want to show everyone that it wasn't a mistake."
City are in a good position with two away goals that could prove crucial but Mancini said he will not leave anything to chance.
"Every game is dangerous but it is better to start from 2-1," the Italian said. "We know that Porto is a top team and we should play like it's 0-0. For us every game is serious, we want to win all the games, sometimes it's possible sometimes not. But for us it's [the Europa League] a serious competition."