Goalkeeper Rob Elliot sustained a hip injury during Thursday night's FA Cup replay win over Luton, and striker Paul Benson had to be replaced in the second half with a knee knock.
Elliot could probably be patched up to face the Saddlers but Benson has been for a scan to determine the extent of his problem and is a doubt.
Loanees Lee Martin and Marcel Seip were ineligible in midweek and will be in the squad, the latter having yet to make his debut since joining from Plymouth some three weeks ago.
Skipper Christian Dailly serves the final match of his four-game ban.
Source: PA
Source: PA