Harewood, who has completed the formalities of a three-month deal, is expected to join fellow newcomer Zurab Khizanishvili, who was ineligible for the midweek Carling Cup defeat at Peterborough, for which caretaker manager Chris Hughton made nine changes.
Hughton is likely to restore the bulk of his senior men for the encounter, although he will be without the injured Joey Barton (ankle) and the suspended Danny Guthrie, while Danny Simpson (also ankle) remains a major doubt.
Shola Ameobi (foot) will be sidelined for some time yet but while Jonas Gutierrez (hamstring) will not make Saturday's game, he is expected to resume training on Monday.
It is sure to be an emotional afternoon as both sets of supporters pay tribute to the late Sir Bobby Robson, with the north stand at Portman Road to be officially renamed after the manager before the game.