To sell or not to sell?

[Anquilis]

90% is not that much, not at all. It is possible to train the team up to 130%+ without paying real money (you need to be in Gold1 or better in Platinum though)
21 years old is almost an old man. Not yet, but close.
The offer is very good. I'd sell and buy 18 y/o FT instead.

Thanks man, but what do you mean by FT?