Bromby sat out the FA Cup win at Old Trafford through suspension after receiving his fifth booking of the season in Leeds' last league game at Stockport, while Gradel did not have permission from parent club Leicester to play in the competition.
Jason Crowe stepped back in at full-back for Bromby against Manchester United, so manager Simon Grayson must decide whether to make changes. Gradel is expected to return to the substitutes' bench.
Andrew Hughes was forced off in the closing stages of Sunday's cup clash with hamstring trouble, but is expected to be fit and otherwise, Grayson has a fully-fit squad to choose from.
The Leeds boss is unlikely to make too many, if any, other changes as he will not want to tinker with a winning line-up.