DANNY Shittu is in the running to replace suspended Millwall captain Alan Dunne.
Dunne will miss tomorrow's televised clash as he serves a one-match ban for picking up his fifth booking of the season against Wigan.
And Shittu, who has been named on the bench for the Lions' last two games, could step in.
Mark Beevers and Shaun Williams, who is available again after suspension, could also come into the back four in Dunne's place.
Angel Martinez has returned to training after a calf tear, but Nicky Bailey, Mathias Ranegie and Carlos Edwards are sidelined.
Cardiff's only injury concern is over top scorer Kenwyne Jones, who has a foot problem.