Rams boss Billy Davies is actively scouring the transfer market for reinforcements and he has made a new striker one of his top priorities.
Davies is now believed to be considering a move for former Aston Villa ace Vassell.
Vassell's future at City has been the subject of speculation all summer with the club having rejected a bid for the 27-year-old from Besiktas last month.
City chief Sven-Goran Eriksson is believed to be willing to listen to offers, having brought in the likes of Rolando Bianchi and Valeri Bojinov this summer.
Davies is keen to bolster his forward line as he looks to find an experienced Premier League performer to add to his attacking options and he could offer Vassell the chance to make the move to Pride Park.