Berbaclass
Fallen Muppet. Lest we never forget
I said failures because winning the league/cup with either Bayern or City are a bit of a prerequisite.I'm not sure there's any other manager in world football who could win three PL titles in four years (having already won three Bundesliga titles in three years) and still be criticised for "failures outside of Spain". Even in the context of comparing him to the greatests of all time, that's an insane way to frame what has been a ludicrously successful career as a manager.
If that's the standard for "failures" then literally every manager in the history of football has awful failures in their career, no doubt starting with SAF and his inability to win more than two CLs in 26 years while lesser managers racked up as many or more in shorter periods of time. You can disqualify pretty much anybody by focusing in on the flaws in their CV.
The money spent and somewhat domestic dominance City and Bayern have makes me look at them and expect them to win the league and a cup or two as a bare minimum. European excellence is what both strive for above anything else as the CL is the pinnacle of club football.
His teams performance in Europe has been not good enough over a sustained period since he left Spain and leaves him with questions still to answer. Eg can he do it without prime Messi, Xavi, Iniesta etc.