I don't care how much you're making - if you're a professional footballer training week in, week out and never getting close to getting picked in the matchday 15, let alone the starting 11, that's gotta start playing with your head. Surely every footballer wants to play.
How hard must it have been to watch the team doing so well and knowing he was on the outer with no real chance of being involved. I think he just stopped turning up to team events after a while too - he certainly wasn't at the awards night.
When you think back to all the fanfare he arrived under and how much was made of his versatility, it's incredible that he hasn't had the chance to play somewhere (left-back, right-back, midfield) at some point in the last 46 matches, or at least (given his ability to play a number of positions) been an option on the bench.
I mean, even Chen played for Christ's sake. Twice. Dreadfully. And Mulligan was even behind him in the pecking order.