Nunez seems like he plays in the same spaces as Sancho, Rashford, Ronaldo, Elanga, and Martial. Somebody is going to have to go, otherwise you're just bringing in another player that likely won't be able to work with the ones you already have.
The bidding on Nunez STARTS at $70M. He has City, PSG and Chelsea (they were prior to Ukraine invasion anyway) sniffing around as well. If this release clause is really nine figures, that's pretty steep.
Rice is $100M regardless. Englishman playing in England. You could get Kalvin Phillips and Neves both for that or pretty close.
As far as defensive midfielders go, everyone stay off Tchouameni at Monaco. He's Anfield bound. LOL.