Agents for Real Valladolid right-back Ivan Fresneda were in London on Friday.
Newcastle and Arsenal have both been linked with the Spanish youngster.
Sky Sports says the Magpies have watched the player several times this season since he made his senior debut in September.
Arsenal are also keeping an eye on the player.
The report says the representatives were discussing potential deals with Premier League clubs. Valladolid want Fresneda to stay but would let him leave for the right price in this window.
