I presume we're all guessing that Eduoard and JRS are the two who have been told to find new clubs. The fact Ahamada doesn't even seem to be being mentioned by Glasner suggests he has no place in the first-team either. If OE and JRS do leave, on top of Eze, then even if Guehi stays we probably need at least 4 players, which is a lot to sign in just 10 days.
I was disappointed Esse didn't get a run out. As much as I love Glasner, behind that gentle persona, I think he's actually quite tough, as seen with the Holding situation. I wonder if there's more to it with Esse and it's perhaps less about football. All speculation of course.