Actually, I prefer Joao Felix to stay at Barcelona rather than move to Chelsea and then move to Milan. Joao Felix had a good season with Barcelona, but Barcelona was unable to make him permanent due to poor financial conditions. Now Joao Felix has joined Milan and is continuing his professional career, but now he is like an outcast.
His performance in Barcelona wasn't very satisfying. It was the main reason that Barcelona didn't try to sign him permanently. So, there was no chance to stay in Barcelona at that time. Unfortunately, Atletico Madrid didn't include him in the main lineup. In this situation, Chelsea offered him to join, so Felix has no other choice. However, it is a good decision to join AC Milan because AC Milan needs more potential attackers.
At least Joao Felix has made some contributions to Barcelona and he is one of the players who is quite popular there, now he plays for AC Milan and that is his own desire, even there is desire to be able to really have permanent contract. Atletico Madrid and Chelsea are not the main destinations for Joao Felix, and Barcelona financial problems that made him have to leave have also been well accepted, now the most important thing is that Joao Felix can help AC Milan to compete until the end of the season in an effort to improve the standings.