City have confirmed the scans have shown a calf strain and David will be out for up to a month.
There was certainly little concern from both the player and medical staff when he initially limped-off against CSKA on Tuesday night, which makes this news all the more disappointing.
Admittedly, Silva has been in brilliant form this season, but Nasri is now showing the level of performance we all thought we were getting for £24m.
Whereas it would have previously been cause for panic, Nasri has shown he can carry the load.
Get well soon, Dave, preferably, for Arsenal next month!