That's far too many. We've already replaced Malen, Guessand and Elliott (Tammy and Bailey have already taken the spots of the first 2 and Alysson is already here to take the 3rd).
Don't forget that for UEFA competitions we're effectively only able to select a 22 man squad (on the basis that Bogarde is the only club-trained player we can include for those 4 slots).
As things stand our actual fist team squad right now is 30 players (I think I've counted right) so the first job is to make decisions on a bunch of fringe players:
Gauci - £1m
Zych
Garcia - £4-5m
Nedeljkovic - £4-5m
Ozcan - £4-5m
Guessand - £25m
Bailey - £5-10m
Iling-Junior - £5m
Dobbin - £5-10m
If they all leave then to get to 2 players in every position we'd need to add a Right Back, a Winger and a 10 but we'd have 'Spares' in centre mid and centre back. However I'd keep Zych as 3rd keeper given, like Bogarde, he fills a squad place that goes empty otherwise. So 8 out, 3 in and then replace anyone else who leaves. The pay for that we will hopefully have £40m from Malen and Barrenechea and around £55-60m from that lot, which should be plenty. If we do go for Mingueza for the RB slot then the link to Mbaye makes sense as that's about the market we can be looking at.