City seem to be selling too many players. Their depth wasn't really as good as people think last season and yet they are open to most of their players leaving. Should Sterling leave, their attacking options would be Foden,Grealish,Haland, Alvarez and Mahrez all very good players but an injury or two really could disrupt their season.
Then you check their midfield and there are only five players there too, Rodri, Philips, KDB, Silva and Gundogan. Think that is quite a thin squad for a 60 games season. I do get the players leaving though, as they are definitely good enough to start for other top teams rather than remaining content on City's bench.