Barry & Garcia get passed around like a pair of traffic cones (which isn't helped by Yaya's lack of enthusiasm or drive to get back when the ball is lost in the opponents half) when the opposition is a footballing side & have the ball.
This was seen in all of our CL games last season (and before you mention BVB & Real getting far, just think of both Ajax games, especially the away one), and whilst - yes, Barry was essential the season before - he is getting on.
Still easily good enough to be part of the squad and play against most teams in the PL if he starts occasionally & intelligently, but I can't see how we can align our desire to advance past the group stages in the CL with a starting spot for Barry.