Roberto Mancini remains hopeful of tying up a deal for Arsenal midfielder Samir Nasri in the next two days.

However, he admits it would be a "big problem" if the Frenchman played for the Gunners in their Champions League clash with Udinese on Wednesday.

Manchester City have been chasing Nasri for much of the summer but the proposed deal is still up in the air and the midfielder made his first appearance of the season in Arsenal's 2-0 Barclays Premier League defeat by Liverpool on Saturday.

Were Gunners boss Arsene Wenger to select Nasri for their Champions League qualifier in Udine, he would then be unavailable for City throughout the group stages.

After the 3-2 win over Bolton that put City top of the fledgling Premier League table, Mancini expressed his frustration that the deal has not yet been finalised.

The Italian said: "For 40 days I've hoped in two days, three days (it would be done), I don't know why we haven't closed it.

"It's a big problem (if he plays for Arsenal against Udinese) but I'm sure we can close in 24 hours, maybe 48. For Nasri it will be important he can play in all the Champions League matches."

Wenger had previously claimed that Nasri is happy at Arsenal and that any deal for his possible departure is a long way from completion.

"He is happy here. There is no departure of Nasri at the moment," Wenger told French media outlet TF1.

"Maybe one day, but it's far, far, far from being done."

On Sunday, City showed why they are expected to be title challengers with an impressive display against Bolton, albeit without ever putting the game to bed.

Goals from David Silva, Gareth Barry and Edin Dzeko were the least City deserved, but Ivan Klasnic and Kevin Davies kept Wanderers in contention until the end.

Carlos Tevez was a second-half substitute for City, making his first appearance of the campaign after a close season in which he made clear his desire to leave the club to be nearer to his family in South America.

A proposed switch to Corinthians fell through and Mancini does not expect Tevez to leave before the end of August.

He said: "Carlos is here, I don't think the situation will change. Carlos is an important player, a top player for us and at the moment we haven't received any offers for him."

Of his team's display, Mancini added: "I think we put in a good performance. We played very well. Bolton are a strong team and I think we deserved to win this game."

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