Cape Town - Antoine Griezmann's agent admits the €100 million release clause in the Atletico Madrid forward's contract means his future remains open to discussion.
The France international has been heavily linked with Manchester United after an impressive season for Los Colchoneros, while cross-town rivals Real Madrid are also monitoring his situation.
Griezmann netted his 16th goal of the campaign - and his 100th in La Liga - to secure a 1-0 win over Espanyol on Saturday, as Atleti cemented third place in the league standings.
The 26-year-old was annoyed to be quizzed about his future in the post-match interview, telling beIN SPORTS: "That's it I've already spoken. I do not want to talk any more."
But his representative, Eric Olhats, has revealed that the Frenchman will weigh up any "suitable" offers that come his way, with United having made the "first and the most solid" approach to date.
"There is an existing clause of €100m, which is unavoidable," Olhats told Telefoot.
"We're thinking right now about the most suitable offer. Real Madrid and other clubs are part of this thinking process.
"Antoine doesn't want to leave the club at any cost. That is false."