Moussa Dembele is keen to leave Dutch club AZ Alkmaar this month as Italian clubs have been put on alert.
"Last summer he (Italian agent Gabriele Savinoto) offered him to clubs and this has happened again. At the moment there is nothing concrete,” Vervoort told Sportweek.
"Moussa still eyes a transfer. He wants to make a next step. If you are with a certain club for a long period you need a new environment.
"Moussa is currently in his fourth season at AZ and this counts for him as well."