I'd sell Mings, Begovic, Arter, Mahoney, Hyndman and Brad Jones (if possible). That should bring in about 20-25 mil.
Assuming we then have 50-55 mil to spend I'd get a keeper, CM and LB for 15 mil each, 5-10 mil on a RB/CB. Send Mousset, Ramsdale and Simpson out on loan to the championship if...