The real problem is not a manager that power trains and heals him as a loan.

The real problem here is the exploit is done, with creating numerous new teams just to get advantage of the first day bonus and then drops them. So searchig for more than a thousand loans in associations it is easily to track down such managers.
This sucks and causes problem in general.

So let's say that I have an injury of a top player and I have no red packs. I say my teammates my situation ans someone says I have some spare, just put him for loan to heal him.
Can this be considered cheating?
Is it beyond the rules?
Isnt it in the borders of association teammates helping each other?

This is my perspective.