Any one who is over 24 and hasn't played in at least three competitive 1st team games in the last calendar year (sub appearances count) should be upgraded at the next window regardless of age or experience. Injuries will be taken into account and allowances made.
This is how you build a stronger squad.
Replace players who are not useful, with those that are.
I have no idea who, if anyone, this would currently eject, but if they aren't good enough to play or push for a place, then they aren't good enough to be the Squad.