Barcelona have issues with La Liga FFP rules unfortunately so they aren't able to spend a lot of money for transfers for now. This was why they couldn't sign Joao Felix permanently.
However this is still not a problem for Barcelona currently. Because their current performance level is quite satisfying. They have just destroyed Antwerp in the Champions League by a big gap. I felt like we were in good old days of Barcelona.

Felix is really impressive since he joined them. He is playing for his dream team of course. I have never seen him this ambitious.

The lad is definitely enjoying is time at Barcelona and this is the player we all knew from his benfica days. If you ask me I would put it out that I am not that surprised with his form because he had it. It was just a the club he went to that doesn’t fit his profile. Atletico Madrid is a club that plays defensively and flourishes on counter attack, the pattern of play by Simeone’s men require players that have such energy in them to track back and move forward when needed but we all know that Felix isn’t at that level physically had that is why he had a fell out with Simeone.
I see Barcelona signing him permanently if he continues with his recent form. Although Barcelona are having trouble with financial Fair play they would pull something out. For the past three seasons now Barcelona have been in this situation and have miraculously been buying players which I think is fishy