The France World Cup victor has signed a five-year deal with the Catalan club, with a buyout clause of €800m, which will see him remain at the Nou Camp until 2024.
Atleti demand that they are owed an extra $90 million from the original release clause, claiming that Griezmann and Barcelona had a deal before the amount of the clause decreased on July 1st.
Griezmann joins Barcelona on a five-year deal with a buyout clause of €800m. The two clubs met in Madrid last Thursday, but it quickly became apparent that Atletico would not accept a payment plan.
And now Griezmann has been confirmed as a Barcelona player. He didn't and was subsequently fined.
The drama may not end here, however.
Griezmann was a losing finalist with Atletico in the competition in 2016 against Real Madrid, where he missed a penalty in normal time but scored his spot kick in the resulting shootout, although his side went on to lose 5-3 overall.
'Atlético de Madrid considers that the deposited amount is insufficient to cover his buyout clause, since it is obvious that the agreement between the player and FC Barcelona was closed before the clause was reduced from Euro 200 million to Euro 120 million.
He signed a new five-year deal in June 2018 but announced in May he would be leaving the club this summer.
Following an internal debate, though, with Bartomeu and coach Ernesto Valverde both advocates for the signing, they made a decision to reactivate their interest in him.
"It was also prior to the date on which the clause was modified the communication that the player made on May 14 announcing his disengagement from the club".