I doubt Ejaria would be on 15k next year, as there should be the standard relegation clause - would still be our top earner.
If someone comes in for him, even with a nominal fee then it is probably best for all parties that he moves on but I wouldn't be surprised to see him still here come pre-season so that the new guy can take a look at him.
A fit, focused Ejaria playing as a #10 could be too good for most L1 teams. Question is, if such an Ejaria exists.