We should only sell one between Chiesa and Soule. I would rather lose Soule in case we get Sancho on loan, because he is a clear upgrade on him.
For defense, on top of Todibo, we also need a RB. Seems like Fiorentina is showing interest in both McKennie and Rugani, maybe we can get Kayode out of this. But ideally we would be going after Amar Dedic, he is amazing. I also have a feeling that Couto won't have much market and could be available on loan. So Dedic/Kayode + Couto for RB would be pretty sick.
Instead of going after Koop, we should consider going for Lee Kang-In. Every time I watched him he impressed me, plus he would probably cost half of Koop (PSG have Ruiz and Xavi in that position anyway). This would free up cash to go after a proper LW, someone like Doue (rumored price €50m), Nico Williams (likely impossible because of salaries and more appealing clubs going after him, but price is €58m), or even Barcola (if PSG get Doue, and probably wouldn't cost more than €50m). So saving €20-25m by getting Lee instead of Koop, and considering that we are apparently willing to splash €35-40m on Adeyemi, all of these players would be within reach.
Lee + Doue/Nico/Barcola > Koop + Adeyemi in my opinion.
I think we would have an insanely strong and stacked team with such mercato. In reality we will likely go after Koop and Adeyemi, and likely sell Chiesa too.