Rangers captain James Tavernier and frontman Jermain Defoe are injury doubts for Sunday's Ibrox clash with Aberdeen.
Right-back Tavernier jarred a knee in training on Thursday while veteran striker Defoe is struggling with muscle tightness, although Rangers boss Steven Gerrard is hopeful both will pull through.
Top-scorer Alfredo Morelos serves the final leg of his four-game ban but Ryan Kent returns from the suspension he received after last month's defeat to Celtic.
Graham Dorrans could make his return from a long-term knee injury before the end of the season but Jamie Murphy will have to wait until next campaign for his own comeback.
Potential line-up
Provisional squad
McGregor
Tavernier
Halliday
Barisic
Flanagan
Goldson
Katic
Worrall
McCrorie
Kamara
Jack
Arfield
Coulibaly
Davis
Candeias
Kent
Defoe
Lafferty
McAuley
Grezda
Foderingham
