The lawyer of Barcelona signing Antoine Griezmann has hit back at Atletico Madrid.

Atletico have claimed that while Griezmann's release clause dropped from 200 million euros to 120m euros on July 1, there seemed to be an agreement between the player and Barcelona prior to this date, so they believe that the 200m euro payment should be met.

Lawyer Sevan Karian is surprised by the decisions and statements of Atletico, he told L'Equipe.

"Antoine is very disappointed by the attitude of Atletico and their leaders, who are acting in bad faith and are communicating the opposite of what they told him in person," Karian said.

The decision to demand this further 80m euros is not understood at Barcelona, while Griezmann's lawyer is not concerned by Atletico's threat to take legal action.

"Let them do as they see fit, we will do the same if necessary," Karian noted.