Rodrigo da Silveira from MP9 Sports, who is the right hand man of Douglas' agent Marcos Paulo Ribeiro, insists they are not negotiating with the Cottagers.
He told De Telegraaf: "We are not in London and won't go to London. We are with Douglas in Enschede and are not negotiating with Fulham.
"On Thursday Douglas will play against Bursaspor. Douglas is very happy at FC Twente and wanted to remain there this season."