He is impressing at EURO 2016 but some European top club have been eyeing him for a while: Belgium star Michy Batshuayi is one of the most wanted strikers in this transfer window.
Atletico Madrid and Juventus both targeted him, he is the Colchoneros "plan B" since it's not easy to sign Napoli's Gonzalo Higuain or PSG's Edinson Cavani.
Diego Simeone woud like to bring Diego Costa back to the Vicente Calderon and to sign the Belgian talent from Olympique Marseille won't be easy, anyway, because also West Ham are keen on him.
Source: transfermarketweb.com