Pep has received plenty of criticism for his failures in the Champions League. More than any other coach, really. And it's not like anyone is giving him a free pass for today's disaster either.
This is Guardiola's 4th year at City and all of a sudden opponents have learned to play against his side? Good joke. Execution was the problem today, not the system.
Gundogan is even worse physically than Arthur. Yet he was their best midfielder in the second half of last season. He also played the number 6 position in most matches.