Griezmann issued a statement on his imminent departure in a length video on Atletico's official Twitter account, in which he thanked the club's fans for all the support they've given him down the years.
In the video, Griezmann went on to say that he chose to leave the club to seek a new challenge, and made the decision after a meeting with manager Diego Simeone and club CEO Miguel Angel Gil Marin.
"It has been five incredible years, thank you very much for everything, I will carry you in my heart", Griezmann said in the video that was published via Atletico's Twitter account, which was further confirmation of MARCA's initial report. "I will keep you in my heart".
Griezmann has netted 133 goals in 255 appearances for the Madrid outft since joining from Real Sociedad. It's been very hard for me to take this path, but I feel that it's what I need.