I see that the performance of Manchester City players is quite even in all their lines and indeed they have proven that they do not experience a decline in performance when there is player rotation, the same goes for what will happen in the future, it is true that Kyle Walker is quite an influential player but that doesn't mean that if he is absent then the team's performance will decrease drastically.
Manchester City will face 2 difficult matches in the near future, against Arsenal and against Real Madrid and with the problems they are currently facing, many of their players are injured, even though it is difficult, I think Manchester City still has a big chance of getting through these difficult matches victory.
Manchester City is one of the most competitive side in Premier League and their performance in last 10 games are clearly showing how things are going for this season 8 wins and 2 draws and Arsenal which is currently at the top of the league table is also having good time with they have 9 wins and 1 lost which mean both are on same level and things are going to be interested in this game which is surely going to be final for these teams with in case of win for the Manchester City we will have no chance for the Arsenal in rest of the season for title hopes and same going to happen with Manchester City but one this is surely Liverpool is surely going to be happy in case of Manchester City win or draw because this will bring them to the top so they are going to support them for this.
With good number of injuries and now we are having too many tough games in few days this is going to be not easy for them because things are not in not good shape, and they have to manage with available players which are surely not as we have top quality players which are now out with injuries.