Atletico Madrid president Enrique Cerezo says they'll happily welcome back Joao Felix should Chelsea choose not to buy him.
Felix joined Chelsea on-loan in January without a permanent option. However, it was assumed Chelsea would pursue an outright transfer should he impress.
Cerezo said on Cadena SER: "Each team's circumstances are different. He's a star, but he's had a lot of pressure and he hasn't had the luck to prove it here.
"He'll become a great player in the not too distant future and it's not necessary to anticipate things, everything will have to be evaluated.
"Chelsea are a great team that can count on him. If he comes, he will be well received. Nothing can ever be excluded in football, any surprise can happen."