Atletico can reflect on a period of success for the club with Griezmann playing a key role, the France forward firing them to Europa League glory past year before winning the World Cup with his country. In an emotional video, Griezmann said that he seeks a new challenge and thanked the club and its fans for their support over the half decade which he spent in Spain's capital.
According to MARCA, a deal to take Griezmann to Barcelona was agreed some time ago and is set to be signed soon.
In those five seasons, Atletico have won the Europa League, the Spanish Super Cup and the Uefa Super Cup.
With one game left this season, Griezmann will have completed five years with Atletico, scoring 133 goals in 256 appearances.
The French forward is believed to desire a switch to Barcelona, who were close to signing him last summer.
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He then put pen to paper on a new mega-money contract at Atletico Madrid but just a year later, he has declared that he is leaving the club this summer.
The France worldwide has announced that he will leave Spanish side in the summer transfer window after five seasons with the club.
"In the last 10 years, we've seen that the club is more important than any one of us".
"You talk about how good Griezmann would be linking up with Messi and Barcelona, what about with Liverpool's front three?"
Sources have told ESPN FC that Atletico were not informed by Griezmann where he will move, but he did tell them he will deposit his release clause with the league at the start of July.
The France global signed for Los Rojiblancos in 2014 and he has made over 170 appearances during his time at the Wanda Metropolitano. It finished second to Barcelona in the Spanish league for a second straight season.