My Dad's mates Brother's second Cousin, said that the reason that he hasn't been anywhere near the squad is due to the fact that he's already been sold.
Therefore the team who has bought him, has put a block on him playing due to risk of injury etc..
Sounds quite a valied reason to me unless he is injured and i've missed it somewhere?
Good luck to the lad if it's true and i'm sure he'll have a very sucessfull career, but not a left back!!!