It's not £80m, it's 80m Euros, wich is £68,4m.
I think we can improve alot by adding a couple of attacking wingbacks options against all the low block teams in PL, probably just as important as a striker. The free space is usually out wide and adding 30+ goals/assists from players like Hakimi and Robin Gosens, compared to R.James (3) and Chilwells (8), would be an improvement.
We already have £30m from selling Tomori and Moses. It shouldn't be that hard to sell Emerson, Alonso and Zappacosta for £25m-£30m either.