I like to think RM and co. feel they have the tools to talk him round and get him performing. If he is adamant he's 'injured'/doesn't want to be here, ala ABK, then you'd think we'd have tried sending him out on loan to recoup some wages at least/rid him from the dressing room?
Maybe we did but it wasn't reported?
Also, it always baffles me how often players will, like you say, do the bare minimum and flatter to deceive, but still expect a move to a bigger/better team/league. Not exactly an attractive characteristic, though appreciate it happens all too often.