On their list I can't see one better then him on his spot.
For one, Modric does hold the award for The Best men's player in the world. He may not have had a good season last time, but he surely has more quality overall that Paul Pogba.
Pogba is a good talent, but is high maintenance for any club. You cannot bank on his attitude and dedication.
I voted for Solskjaer to get the boot before Frank does if at all any of them is to get sacked. Lampard is more of a project manager at this point, and the Chelsea board has to recognize that and give him time if he can't get the resources just yet due to regulations.