I'd say we have - though defensively without Heinze think a lot of cover is gonna be provided by the fact that utility defenders like Silvestre, O'Shea and Brown can play a number of positions in defence. It should be adequate cover, but prob not as well covered there as some teams and maybe signing in left back (like Baines for example) as extra cover would be a good move in Jan.
All well and good and a strong squad, as three payers I rate highly for slotting in, but if we got a few injuries at the back - like we did last season - then can see us having to bring in people like Evans, Pique and Bardsley who have returned from loan. Three good young prospects, but unproven so could be risky and we could end up with quite a shaky unproven back four if key men at the back pick up injuries.
Think thats the only potential weakness in the squad, caused by Heinze being a twat, but overall I'd say we have the strongest squad just about. Only Chelsea and Liverpool could be agued to be stronger in depth, but reckon you could say the same about both of their sides if you carefully removed some key players. Can't think of any side in the Premiership that doesn't have a weak point somewhere in the squad, and we def have the strongest attacking squad in the league now.
Incidentally, hasn't Hargreaves played left back several times for England to good effect? In which case, could possibly be the extra cover we need there now.