Well I don't know. Let's call it £80k a week, which would apparently be 4 times his current wage. Sancho is widely reported to be on £350k a week, so that would be 4 1/2 times as much before we even look at the other players.
We obviously wouldn't be paying alot of Sancho's wages. Maybe £100k for 5 months? The point of loaning sancho for united would be to get him playing regular minutes in the prem so united can play him next season.
Let's be honest if we're signing a £40m player their going to be getting £100kpw.
Thuram, kamada and mofi i think would be on less then £200kpw combined. These players would be easier to make a profit on and their wages won't stop us from being able to sell them on if they don't cut it here.
Kudus at £40m on £100kpw is a massive gamble and if it doesn't work out we are stuck with him.