Only if they've been at the club for 3 or more years - and even then they wouldn't even need to be registered anyway - so it's 3 spots wasted. JT can still do a decent job, he's a player you'd like to have around your squad simply because of his leadership qualities which you do need, but most importantly he needs to stay simply because of the squad make up, that's why the club won't be keen on selling him. He'll obviously not play as often but I'm very sure Jose will use him in the right way. JT still has a season or so (maybe even longer, we'll find out next season) of top level football left IMO.