Atletico Madrid have moved to secure Saul Niguez to a new contract.
The young defender, on-loan with Rayo Vallecano, is being watched by Arsenal and Liverpool this season.
AS says Atletico are determined not to lose Saul and have moved to open new contract talks with his advisers.
Atletico are offering a new deal to 2018 with an improved buyout clause of €24 million.