After reviewing the CL stats, it just worries me, and our performances have been ranging from sufficient to mediocre to down right awful.
The stats scream that he's 2nd tier in the scheme of European managers, and the tactical maps of our non-existent midfield against the beautiful, precise formations of Dortmund, Ajax and Madrid who set up to exploit us, and they did.
The only thing in his favour is that I don't see the natural replacement, every single candidate has a substantial strike against them.