Icardi at 55M is huge business. His option was at 70. The 15M clause is how PSG got Inter to lower their demands, which is great business by Leonardo.
Cavani might or might not leave. He has proposals from nearly every big team but his agent has offered PSG to stay with a 40% salary discount. Talk about a heart and soul player.
With Icardi signed though, I'm not sure Cavani still holds that position. He'll be a bench option probably.
Meanwhile Aouchiche (St Etienne) and Kouassi (Milan) will likely leave PSG on a free. Aouchiche had trouble finding playing time but Kouassi played a lot in the second part of the season, playing way more minutes than Diallo or Kehrer (and to be honest, he was SPECTACULAR).
These two will hurt PSG. At some point, if they don't start playing their youngsters, at the very least on the bench, they'll continue to lose money. Coman, Ballo-Toure, Zagadou, Guendouzi, Moussa Dembele, Ikone, Diaby, Nkunku, Maignan, Rabiot, etc...
Crazy talent coming from their academy and leaving for cheap or free.