Alan Hutton is suspended after collecting his 10th booking of the season in the 2-1 Barclays Premier League win over the Baggies on Tuesday.
Philippe Senderos has suffered a set-back in his recovery from a calf injury and is sidelined while Kieran Richardson, Aly Cissokho, Nathan Baker and Libor Kozak are out.
West Brom will be without injured forward Victor Anichebe (groin) and cup-tied midfielder Darren Fletcher for Saturday’s quarter-final.
Albion boss Tony Pulis has said he has a few “knocks and niggles” in his squad to assess – winger Callum McManaman (foot) is a doubt, while frontmen Saido Berahino and Brown Ideye have both been playing recently with pain-killing injections.
Pulis also said the club “have to go careful” with Stephane Sessegnon, with the forward understood to have suffered a family bereavement, and it remains to be seen whether goalkeeper Ben Foster keeps his place after his costly late error in the 2-1 Barclays Premier League loss at Villa Park on Tuesday.