West Ham have launched a £13m bid for Eibar defensive midfielder Joan Jordan, Sky Sports News understands.
24-year-old Jordan has made 75 appearances for the La Liga club across two seasons, having begun his career with Espanyol.
The Hammers are targeting him for competition in midfield and he could be one of as many as four players to join from Spain this summer.
Having already completed the signings of Pablo Fornals for £25m from Villarreal and Espanyol goalkeeper Roberto on a free transfer, the East London club are set to move forward with a deal for Celta Vigo striker Maxi Gomez after seeing a £29m offer accepted.
Valencia are also understood to have had the same offer accepted by their La Liga rivals, which includes add-ons.
The 22-year-old has been a target for the Hammers since last summer. Extensive talks were also held in January but the Spanish club wanted his £43.3m release clause met.
They had been bidding for Barcelona's Andre Gomes, but he is understood to prefer a move back to Everton, while the Hammers are also one of the clubs keen on a permanent deal for Nathaniel Clyne.