I think Marco would have done this the right way, Koeman and Sam always moaned that the squad was to large, it can have negative impact on the quality of training. And, although its not nice, its needed.
You guys wont be playing for us, please find another team, if you cant find a new team then you will be training with the Under 23. it helps push these guys out of the door.
And some on here have mentioned that they have friends in the squad and they wont be happy with the choice, these guys are professional, you cant cry because your friend doesn't train with you any more and if that is your attitude you can go too.