He didn't get rid of them, they're still there..if he didn't want them why not sell them last summer?
He couldn't manage his squad that's a fact, Di Matteo can. If you have a squad of players you rotate and play them all especially with senior players, it's about making everyone feel wanted and part of the squad.
Abrahmovic doesn't give a sh*t about the players, if the manager had won everything and got rid of every senior player in the process he wouldn't have given a sh*t, Abrahmovic thought the results were poor and he was right, so he sacked him.