- yes, today and tomorrow sell.
- You can keep the 3* players (but add them a new position so the training goes there and not for increasing qualty)

- Duval can bring you some good money and Janson is too old.
Benalmir and Petrilak have 3 positions
Kotaj the MC isn't so special, just a single position
King has low q (5*) , so 4* new season but can give some good money.
The other two will be 5*, so still useful.

Not that any of them is something special (except your DC-DMC) but you have to keep few of them for a start.