"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.
"If the conditions are okay, AZ should co-operate. They would be more (likely) to co-operate than in the summer, as AZ didn't want to let any of their players leave because of the Champions League.
"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."