The point was you could end up with a player who has aspirations above the championship who joins because he doesn't have any better options and then goes through the motions. Off the top of my head some examples of players who joined but couldn't really give much of a toss about being here except for the money are ABK, Maitland Niles, Orsic, Salisu, Lemina.
If you believe the initial reports then his first reaction was fuck off. Doesn't exactly scream come and get me, does it? Not all players will react in the same way but definitely need to do their homework on attitude and whether he'd be worth it after 6 months and the reality of championship football kicks in.