I would sell the 3* players first.
And the 4* players (+20) You can keep the ones between 18-20
Buy 5* players towards your needs when the league started and your T11 should be at least 8 5* players and 3 4* players
This will make you succesfull.
This should make me successful.
Yesterday I played a match against the penultimate in my league (I'm 1st).
18.9 value vs 12.6
69 vs 31 ball possession
8 vs 5 shots on goal
His 3* 13quality gk received a 9 + best player