The 26-year-old is reported to be a target for a number of Europe’s largest clubs, with Manchester United linked with a move for the France international last summer.
Griezmann is expected to remain at Atletico for the remainder of the season, but it appears he has been given the all clear by Simeone to leave the club in the future.
“Of course Griezmann will be able to leave at some point, the same way (Diego) Costa and Arda Turan were allowed to leave,” Simeone told l’Equipe.
“I love my players a lot and I love to see them grow. I am not ungrateful.
“If a player comes to me and says: ‘Coach, I have a once in a lifetime chance to play for a certain team, I want to leave’.
“If he did all he could for me as Griezmann does, I’ll say it’s no problem. I know that he needs to grow.”