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.
Joao Felix couldn't do anything when he was returned by Chelsea, in fact his arrival was not well received by Atletico Madrid so that he will be a loan player again at another club next season. In fact, Joao Felix's fate was not so fortunate that for 2 consecutive seasons he had to be at a club whose status was not fixed, only on loan. I know Joao Felix is doing his best but his current condition and high wages make it difficult for other clubs to borrow or make him a permanent player.
As a result of a wrong transfer, Joao Felix is still trying to shape his future. He was on loan last year, and will probably be on loan next year. Let's see which team Joao Felix will go to after Chelsea and will he be successful there? I am hopeful for him, but of course we do not know what will happen in the future.
But at least he can get a lot of playing minutes even with loan status, I wonder if he will get playing minutes if he stays at Atletico Madrid, with a situation that looks "his presence is not expected" I think that he will not get many playing minutes. On the one hand Atletico Madrid do not want to sell him at a cheap price, on the other hand they also seem to make his status hanging, whether they need him or not. Obviously for a player he will definitely not be comfortable in such a situation. But I haven't heard that Felix wants to be sold.