This always gets said but how often do we see players not perform when they don't get their move? I can think of far more players that have been kept against their wishes that have continued to play at a high level than those that haven't. Players will want to leave and might kick up a fuss to force a move but as soon as it's no longer possible for them to do so, what reason do they have for not performing and how will it benefit them.
It works both ways though. How many times do clubs sign a player and 6 months or a year later they're trying to sell them?
Plenty of players have wanted to leave, not got their way and eventually accepted the decision. Ronaldo a year before he joined Real, Modric (to Chelsea) the year before he signed for Real, Mascherano to Barca the year before he left, Fabregas to Barca the season before he left, Suarez the year before he moved, Schneiderlin the year before he left Southampton.
I completely understand that lots of players who want to move end up getting their way. I thought the question was how Coutinho would react if he doesn't get his way. History suggests that the vast majority of players that are put in the position knuckle down - again I can only think of Berahino in recent years that hasn't.
I'm not sure what the situation with Ben Arfa was but both Payet and Gallas left during the window they kicked up the fuss in - they weren't forced to stay.
