Cullen has made five League One starts for the Addicks since joining in August and Bowyer said: “Obviously if they were interested in selling him then we would be interested in taking him.
“The problem we would probably have would be his wages. That could be a problem – we’ve got a budget. But maybe the owner or the new people, if they come in, might find it doable.”
But he added: “He has definitely improved us. He is a very good player, for sure.”
Club owner Belgian Roland Duchatelet may have reservations after slashing the budget right across the board at the SE7 club – claiming that losses need to come under control to make a takeover look more attractive to interested parties.
Bowyer was only able to move in the free agent and loan market in the summer.