FC Twente insist no offers from Fulham have been fielded for Douglas.
Douglas is said to be this week deciding between Fulham and Newcastle United as he seeks a move to England.
The Cottagers are rated as favourites for Douglas, but Twente chairman Joop Munsterman insisted: "We have not even received an offer from Fulham."
Douglas added: "In football everything can change quickly. There's still ten days until the transfer deadline closes."