The 36-year-old was sacked by Leicester after punching team-mate Callum Davidson on a pre-season tour in 2002, but has found greater popularity at The Den.
Midfielder Paul Ifill said: "Dennis would be a popular choice with the players, but I don't know what the fans would think. Maybe they'd like someone with a bit more experience. I've heard he'll be in charge on Saturday and will find out more later today."