If they're talking about a core of 16 first team players then that'll consist of 1 keeper, 3 fullbacks, 3 centre backs, 5 midfielders and 4 forwards.
In terms of our current squad we have Roefs (keeper), Mukiele, Reinildo, Hume (fullbacks), Ballard, Alderete (centre backs), Xhaka, Sadiki, Diarra, Le Fee (midfielders) and Brobbey, Angulo (forwards). 12 in place so first team signings would be 1 centre back, 1 centre midfield and 2 forwards.
With the rest of the 25 man squad being Ellborg, Moore, O'Nien, Seelt, Cirkin(if he stays?), Rigg, Talbi, Jocelin, Mayenda. Noting they don't all need to be registered in the 25 but I think would be considered as such. Maybe Seelt and Cirkin will move on and we'll sign two young defenders as well.
Patterson, Pembele, Huggins, Hjelde, Alese, Masuaku, Neil, Browne, H Jones, Ba, Aleksic, Mundle, Traore, Adingra, Isidor, Rusyn and Abdullahi will either not have contracts extended or be farmed out in some fashion.
Spending say another c£150m on a centre half, a centre midfielder and 2 forwards (a striker and someone who plays from the right) feels like you could add some real quality to the existing core of 12 players. Especially if one of them is a free transfer.
So when all fit the first XI looks like Roefs, Mukiele, Ballard, Alderete, Reinidlo, Xhaka, Sadicki, Le Fee, Angulo, £60m right wing and £60m striker.
With a bench of Ellborg, Hume, free agent centre half, O'Nien, £30m midfielder, Rigg, Talbi, Jocelin and Brobbey.
Basically this season's team with £120m injected into the front 3 and more depth on the bench. Can we hold on to all of our current first team? Can we attract £60m forwards? If we do I can see some real progression. Exciting times.