I don't buy that Sane has been carrying any kind of injury. Pep is clearly unhappy with how he's returned after the summer. He started on the bench for the first two pre-season games, didn't even feature in the third and was hauled off at half time against Chelsea when there were no actual signs he was carrying a knock.
I totally trust Pep on this one. Besides, an angry Sane with a point to prove being thrown on against tiring legs for the last half hour could serve us very well.
If anything, i felt that Gundogan might have slipped behind Foden in the midfield pecking order so i'm surprised he starts ahead of Kev but Xhaka and Ramsey are notoriously bad at tracking runners from midfield and Gundogan can definitely offer a goal threat finding space with late runs into the box.
Still confident and that's an amazing bench to win the game late on.