I was a bit surprised he was taken off. Perhaps he was tiring. He looks so supremely balanced on the ball and after an ordinary first half was starting to make things happen in the second. We saw some of those characteristic Leipzig moves he excelled in over there, where he follows his own short forward passes into the box, confident that he can take the sharp returns in crowded areas. The penalty shout followed one off these. It was fairly clear cut and the ref made a schoolboy error. He is, maybe, one of those refs who has never played footy and doesn't quite understand what happens when a standing foot is taken from beneath a player about to shoot.
Any road the bottom line is that Keita is coming good at the right time. There is a big part for him to play between February and May. I'm sincerely sorry for those fans among us who just don't see it. It must cut their enjoyment a fair bit.