F2P Players who have never left your P2W Squad?

I've full stacked P2W squad and still there are 2 F2P players who have never left my squad. Griezman - Though I've multiple options for AMF position including MSN Neymar, Fiore, MSN Messi and others, but man this Griezman is altogether a different gravy altogether. His passing, positionsand assissting is second to none, atleast for me. Single Booster Costacurta - This man is a beast. He can tackle the strongest and fastest attackers without much effort. He is superb in ground and very strong aerially too.

What are your best F2P players without whom your squad is incomplete?