Was it really that hard to figure out? Utter weaken your team and keep just the avg stars player you wanna meet in the cup draw (keep 3* if you want to face 3* teams). Sell them sack them whatever. Wait for new season, mass tokens (or dont spend what you bought), and as cup is sorted, buy scouts/youngsters/pt back the team.
Wasnt really that hard to figure out. Point is not everyone has will to erase a hard worked team and start back from scratch.
I couldnt aswell since my players over 5* cant be sold (i m top level for my server) so i d have to fire them, altho i would nave tried it for sure.
Grats on the cup!