TonyM said:
They're sweeping midfielders, they play between the midfield and defence, simply feeding the creative midfielders when they get the ball and staying back at all times to offer a ball backwards to recycle possesion and then cover the defence by positioning themselves and reading the game. It's a very spanish role, I can't really think of any other nation that produces that sort of player. Clearly the Barca execs saw him as our Busquets, but Mancini had no intention of playing that way so didn't know what to do with him imo