The recall for the New Zealand-born forward is one of four changes head coach Andy Robinson has made to his line-up for the return match in Partick.

Mustchin, who made his Test debut in Argentina last summer, replaces fellow Scotland man Craig Hamilton, who is rested after playing well in the victory over Glasgow at Murrayfield..

Ross Rennie is out after undergoing an exploratory operation on a knee injury so Alan MacDonald comes into the back row.

Wing Mark Robertson and prop Geoff Cross are also called into the side after missing the Boxing Day game due to injury.

Warriors coach Sean Lineen has also made a number of changes as he seeks to pep up his side and keep hold of the 1872 Cup.

Fergus Thomson makes his second start of the season at hooker
instead of Dougie Hall while Moray Low is also recalled to the front row.

James Eddie returns to first-team action at blindside flanker with Kelly Brown switching to No.8 in place of Johnnie Beattie while Sam Pinder, replaces Colin Gregor at scrum-half.