I don't think Felix would be signed permanently considering Atletico Madrid ask too much money for his transfer fee. Maybe he would be loaned again. If he doesn't then I think Morata will be the leaving one. Maybe he would return to Italy if there is still interest from there.
Alvaro Morata is a big flop , he is no longer the kind of player a defender wants to fear and fret about, it would be good to see him leave if he has been rumoured to leave for saudi arabian leagues.
Felix is really not comfortably with staying with Athletico Madrid. He has no desire to continue with the club.
Barcelona has already made deal with Dembele moving to Psg and it's time for them to sign a new right winger felix can really fill in well to replace Dembele but he will be signed on loan for the price is too much to pay for a financial disturbing barcelona to pay such.