Firstly, he is not "turfing out" players.....certainly not the two contract rebels you are referring too. They simply don't want to sign the current offers, or rather their agents don't. He is however "turfing out" top quality like Kone, Gibson, Cleverley etc....maybe that's what's upsetting you? At least understand the situation with regards to why Barkley and Lukaku's Everton futures are uncertain. I think you'll find the manager desperately wants both in his 11 next season.
Find me a manager who wouldn't. If the project was on track then the lure of even bigger ambitions would tempt virtually every manager. If it was not going to plan then they'd all want out or the fan base would chase them out. It's how football works. Look at the statistics for managers longevity at clubs in th epremiership and the average term of duty. There's a few obvious exceptions, none of which you can apply to most situations.....SAF, Wenger and Ginger Nuts himself. SAF was a serial winner at what some consider the biggest club in the World where he had absolute total control so absolutely zero chance of him having reason to leave. Arsene is Arsenal for life - no discussion required. And Moyes just hit the glass ceiling and moaned forever more before going elsewhere and failing spectacularly.
So, in answer to your comment, "what's new"? Managers like players leave clubs.