Fortuna Dusseldorf will meet with Watford in the coming days over the future of Dodi Lukebakio.
The midfielder has been superb for Fortuna Dusseldorf this season, where his form has caught the eye of bigger German clubs.
Fortuna are keen to extend the deal, though accept they face a battle to keep hold of him.
"There is certainly a chance, it is minimal. But we'll try to make maximum use of this," said Fortuna chief Lutz Pfannenstiel.
Borussia Dortmund, Borussia Monchengladbach and TSG Hoffenheim are all keen.