Atletico Madrid supporters club are furious with Joao Felix for the way he acted when he faced his parent club last Sunday.
In a strong message to the player, the supporters said on X:
"If you wanted to offend us, you didn't succeed. It's about who wants to offend but who can.
"If it was a farewell, good luck to you. You will join that select group of traitors that make up Hugo Sánchez, Thibaut Courtois and some others.
"And if it's because you can't do more for us, then you already have enough," the message reads.
Felix celebrated in front of the Atleti fans by standing on the barricade and lifting his hands. The gesture has been taken as a dig at Atleti while some reporters have taken it to mean something else.
It's unlikely that Felix will continue his career at Atletico Madrid next season regardless of how the campaign turns out for him this term.