I agree with Skinster -
Loaning players it's a waist of time and resources. If I have a 3-4 star player to loan - I would rather sell him, I don't gain anything from loaning the player (1 token it's a joke) if I want to train my player I can do that myself keeping an eye on his injuries. The player does not gain match experience if he plays in the team or not, and he doesn't train any faster than I can train him as a reserve.
Bad Idea