Yeah, I made mine on 8. Yeah, I am probably guilty of making him too good, but it's not like he is too good for the club./ My brother won the league, cup, CL, and Super cup. He also unlocked the No 1 club trophy, so his guy is playing for the best team.
Here is something else though, he started a ml original's ML, but this time around he edited a fake team player from the pes league, and turned him into himself, bought him from the fake team and he seems to be normal so far - after 3 games, he still has half an affection bar, and scout report said "Nothing suggesting he is unhappy at the club".
So it looks like that might be a way around it - I don't know how hard it will be to sign them though, I will be starting my own Original ML soon so not too hard I hope.