The two strikers formed one of the best partnerships outside of the top flight during their time at Scunthorpe before going their separate ways.
Keogh is currently at Premier League club Wolves.
O'Driscoll, who signed Sharp from South Yorkshire rivals Sheffield United this week, told The Star: "He is someone Billy knows and they have been talking. He is someone that we are aware of.
"You make calls to other managers all the time and his name has popped up when we have spoken to Wolves. He is someone we would be interested in because he and Billy were telepathic when they were at Scunthorpe.
"If he did come here it would be on loan but there won't be any developments in the near future because Wolves are still formulating their squad."