It seems that Joao Felix's return to Atletico Madrid did not make him Happy. It seems that he still can't get in touch with Diego Simeone. With these bad rumors, Joao Felix has been linked with many clubs wanting him. I think Joao Felix is a good player, at Chelsea he was not at his maximum because of the coach. There is news Barcelona and Man United are interested in Atletico's most expensive player. Of course they can take advantage of this bad moment to get Joao Felix.
When Felix was at Chelsea last season he came with so much to offer to the team but the coaches that was in charge could not even make use of the player of such skills and ability to cause havoc to oppositions, imagine Lampard doesn't know where to place Felix instead he starts him from the bench. I know he (Felix) would still want to play for the blues if there's a presented opportunity, he's one of the best play maker in that Chelsea team and I wish the Blues could sign him at this point in time.
Even if he plays for ATM next season I don't think the atmosphere would be cool for him in that team, his body language isn't the same as of when he started playing for the a
Atletico Madrid team (IMO), but who knows what might happen before the kick off of next season.