OK mate using that benchmark
With the resources De Boer has in Holland he should win the title every year - he hasn't thus he is a failiure
With the resources Mourinho has had at Chelsea first time and Madrid he should have won the league every year, he didn't - and he didn't win anything in europe either - thus a failiure
Guardiola should have won the league every year in germany by a mile and should be winning european trophies every season really - he hasnt so a failiure
Wasn't doing well before the announcment - City where 3 points off the top when they annoucned Guardiola mate, and their form dipped badly afterwards, it's picked up now ofc but it had a 100% noticable negative effect ont he team - and as for why are they in the CL still then, for the QF they had started to recover and play well again and against Kiev they beat them whilst still not playing very well - just that Kiev where so far below them they could get awya with it.
City fans wouldn't know a good ,manager if they had him mate, they are a spoilt brat of a fanbase by and large the ones who post on the internet are at least, they are criticising the bets manager they ever have had by the way - because pelligrini is definitely that
Rather look at this is the same manager who bought a 19yo Isco and made him a starter, brought a 18yo Cazorla into the villareal first team and made him a core player for them, who turned forlan from a united reject at 24 into the top scorer in spain and the CL the following season or who built a team around riquelme and got the best out of journeyman and young players
Ineahacho has played a part in 31 games this season mate, Bony in 32, could he have brought him on faster - possibly, but you can argue that maybe the last 6 months he has improved and is now ready and the manger is timing it perfectly for his development.
But by all means you may think the bloke who made Isco and Cazorla when they were still in their teens isn't very good at judging young players and bringing them along correctly
You would honestly rather have a manager who ahs won 4 titles in Holland with by far the bets team in the country and done absolutely nothing else, than have a man who ahs reaxched the QF of europe 5 times and the SF twice with three seperate teams?