That £20m will go straight into this year's accounts too (won't be pure profit as we'll be writing off the value of the contracts, but still). Trying to think about how the spending will get accounted this year, would expect it'd be roughly something like this (most of this is very rough numbers and the contracts are based on info from transfermarkt, do not take these as gospel)
Moutinho - £5m, 2 year deal = £2.5m
Jota - £12m, 4 year deal = £3m
Patricio - £18m, 4 year deal = £4.5m
Boly - £10m, 3 year deal = £3.3m
Vinagre - £2m, 5 year deal = £400k
Dendoncker - £12m, not sure about the contract - let's assume 4 years so £3m
Traore - £18m, 5 year deal = £3.6m
Jonny - £15m, 4.5 year deal = £3.3m
Jonny loan fee = ?? can't find any info on it - let's be generous and say £1m
Jiminez loan fee = £2.5m
Bonatini - £5m, 4 year deal = £1.25m
Total that up and it's about £28.5m to go into the books this year. We'll make a loss on the transfer side for sure but I don't think it's anything to get concerned about.
-edit- hmm excluding loans that's only 8. I might be missing something really obvious
-double edit- missed Leo and Afobe. Afobe will be immediately written off and we'll make the difference as profit, so he's about a £2m credit this year
-triple edit (!) - thinking about it Batth should be pure profit, if I understand everything correctly, as he came through the youth ranks. So that's £3-3.5m credit as well. Nice!