Unspecified injuries ruled both men out of Saturday's 2-2 at Birmingham, with Stock missing out on the Clarets' matchday squad for the first time since joining from Doncaster in the summer.
Joseph Mills came in for Lafferty at left-back, where Ben Mee (medial knee ligament) will not return until the new year.
Danny Ings is expected to make a third consecutive start in attack having netted his first goal of the season at St Andrew's and having apparently put serious knee injury problems behind him.
Burnley are without a win in five games since beating Hull 1-0 on November 24, drawing four of those matches.
- Sports & Recreation
- Joseph Mills
- Ben Mee