By Max Winters For Mailonline
Published: 13:50 BST, 20 July 2019 | Updated: 13:50 BST, 20 July 2019
The Royal Spanish Football Federation (RFEF) has announced it has launched an investigation into Barcelona's pursuit of Antoine Griezmann.
The Frenchman moved to the Nou Camp earlier this summer for a £108million fee, signing a lucrative five-year contract with the La Liga champions.
However, Atletico are claiming they are owed a further £72m from the transfer of their star man. It is alleged that negotiations between Griezmann and the Catalan club first took place before his release clause lowered significantly.
The RFEF has launched an investigation into Barcelona's pursuit of Antoine Griezmann
Griezmann signed a new five-year contract at Atletico last summer and that included a release clause of £180m (€200m). That fee lowered on July 1 to £108m, the price Barcelona eventually paid.
Atletico chose to report their rivals to the Spanish footballing authorities, asking them to have a thorough look through the negotiations.
There has been no official word from the RFEF on the intricacies of their