The Ghanaian centre-back remains one of the top targets in the European transfer market
Valladolid sporting director Angel Gomez is hopeful top asset Mohammed Salisu will remain with the club.
The 21-year old Ghana international has drawn widespread speculation of a move away from the Estadio Jose Zorrilla.
A towering defender at 191cm known for his aerial prowess and ability to make good clearances, Salisu has been linked with Manchester United, Real Madrid, Atletico Madrid and Juventus.
Editors' Picks
The release clause in his present contract which expires in 2022 stands at just £10.