Villarreal are the new frontrunners in the race to land Arsenal and Everton target Sander Berge this summer.
The 20-year-old has been tipped as a star of the future after a series of impressive performances since joining Genk last year.
Both Arsenal and Everton are reportedly tracking his progress in Belgium and could hand him a crack at English football when the window opens.
Genk signed Berge from Valerenga for just £1.75m in January 2017 but they believe his value has rocketed to around £13m since.
That would still represent a reasonably small gamble for either English club but there is also strong interest from Spain.