Premier League transfer target Saul Niguez has changed agents.
The moves comes amid suggestions in Spain that, despite signing a nine-year contract two years ago, the 24-year-old could look to move in the summer.
He signed his long-term contract two years ago when still represented by Gestifute. That will see him stay at Atletico until 2026 if he sees it out.
But his buy-out clause of €150m is understood to be negotiable and therefore not beyond the reach of Europe's top clubs.