Also, if he plays, Nick Barmby will be making his 300th appearance in English top flight soccer.
Leeds are once again without Mark Viduka, who is still in Australia due to his father's illness.
Lucas Radebe may be available, along with Michael Duberry but Zoumana Camara is suspended for one game and David Batty is a doubt with an ankle knock.
Stephen McPhail also returns after serving a suspension.
Middlesbrough have Gareth Southgate and Ugo Ehiogu back from injury.
Brazilian Doriva returns from a suspension and Jonathan Greening is back after having his tonsils removed, but Colin Cooper (hamstring) is out.
Leeds (from): Robinson, Kelly, Harte, Morris, Matteo, Radebe, Batty, Barmby, Bridges, Pennant, Johnson, Smith, Domi, Bakke, Lennon, Milner, McPhail, Kilgallon, Richardson, Carson.
Middlesbrough (from): Schwarzer, Jones, Mills, Queudrue, Davies, Southgate, Ehiogu, Riggott, Boateng, Mendieta, Zenden, Doriva, Juninho, Downing, Greening, Maccarone, Nemeth, Ricketts, Job.