If we go 343 or 3412 next season...
Wing backs
Id have no problem going with Mykolenko + Nkounkou as left wing back. However, if Lampard has any concerns on either player then I'd go for Dwight NcNeil or Aaron Hickey because they can also play in other positions and wouldnt command high wages.
On the right it has to be Patterson and Id look at Singo (Torino) who only has a year on his contract.
Centre backs
Id keep Godfrey and Branthwaite and then look at the following:
Ginter (Free)
Bremer (Torino)
Zabarnyi (Kyiv)
Colwill (Chelsea)
If we could bring in 2 then I wonder if someone like Welch could be 5th choice
Centre midfield
If theres any chance we could bring in Tchouameni (Monaco) and Kamara (Free) along with Gilmour then we'd be set up nicely long term.
Douglas Luiz (Villa) will only have a year on his contract as will Gravenberch (Ajax) and Bissouma (Brighton).
Theres quite a lot of opportunity this summer to bring in some real quality across the backline and centre.
As always, the key is going to be shifting out Mina, Keane, Holgate and the usual suspects Gomes and Iwobi. If we can bring in £40mil for those players then theres quite a lot of opportunity out there.