i dont think he's a poor manager,
his players arent exactly good enough to win anything.
world class: hart (extremely consistent last season, form has led through into this season) and tevez (this man is a machine, can score and create from anywhere but on his own he cant do it all), robhino (has shown what he can do on the world stage, has no confidence and lacks motivation outside the brazilian league)
potential world class: balotelli and adam johnson (need a little fine tuning but will get there)
good players: toure, adebayor, silva, boateng and bellamy
the rest are all average players: barry, lescott and co.
he has 3 world class players (1 of them who doesnt want to be in the squad - robhino) and one is a keeper. they need a world class creative midfielder (johnson and balotelli can hopefully cover this) and a world class defender, then they will have a strong core.
without a strong core, they have sub par side.
their strongest line up would be.
robhino - tevez - balotelli
silva - toure - johnson
kolorov - boateng - toure - richards
hart
bench: adebayor, bellamy, de jong, barry, viera, kompany, lescott and given
yaya toure would have to be a holding mid in this 4-3-3 formation, but as you can see it is too attacking minded and half of those players cant defend. they need much better full backs.