Wilkins and player-manager Dennis Wise know Duberry well from their Chelsea days together.
The Lions are looking for an experienced defender with Paul Robinson out injured.
Wilkins said on the club's website: "I think people do put two and two together knowing that Dennis and I both know Michael and have worked with Michael, so that will always be the case.
"The squad is one that is improving internally, but if we can bring in some players of quality like Michael, then that would be very nice."