That is something natural, with the development that Felix did it might change the view of Atletico Madrid and Diego Simeone to undo his intention to sell Felix. I think it is the result of the hard work done by Felix so that it makes him glimpsed by management and coaches.
This is a lot to talk about especially after Felix was loaned out to Chelsea which made many of us speculate that Felix was not included in Simeone's game scheme, or even Simeone did not like Felix.
At Chelsea he played well, although he didn't make a big difference to Chelsea but it wasn't his fault but the team's situation was bad. But in terms of performance he was good.
Joao Felix in my opinion is a good player in the right hands. But the thing is at Chelsea he really can't develop any more than he should. When in the national team he was quite dominating in building attacks on the opponent's defense. However, the 2 clubs, both Chelsea and Atletico Madrid, were unable to manage the team because the problem was with the coach. Simeone has lost Atletico Madrid's style of play and he should be replaced with a coach who can add a bit of a new touch. Therefore Joao Felix was not happy to return to the club, even though he had said he was comfortable at Chelsea but Mauricio Pochettino still returned him on the grounds that it was not in accordance with Pochettino playing ideology.