First of all, he doesn't have players with the same quality as level 22:
You see it with 9 stars because you're checking his team from Associations, and in Associations only stars matters, not real quality. He has 9 star players, so in Associations you see them with 9 star players, not his real quality (which is "50" as you can see) even if he is 15-20 levels below you.
It's very easy to get 9 star players if you use the personal trainer. Of course it's going to cost you some tokens, but if you buy the best scout in the list (or the best recommended player offered to you) he will be already almost 7 stars. Going from 7 to 9 will cost you tokens but not as much as you imagine.
As I was saying, anyone has any proof for his accusations against this guy or can you accept you are dealing with a Manager who buys tokens?