St Johnstone midfielder Gary McDonald expected to miss rest of the season

St Johnstone boss Tommy Wright has revealed that Gary McDonald is expected to miss the rest of the season due to a knee injury.

The midfielder, 31, suffered the problem during the warm-up on March 25 before the Saints' 1-0 win at St Mirren in the Scottish Premiership.

"Our season has already been marred by freakish, 'non-contact', serious injuries," Wright told the club's official website. "On a disappointing note, it looks like Gary may need a similar operation to Steven MacLean."

MacLean was ruled out for four months earlier this season after undergoing knee surgery.

St Johnstone continue their league campaign on Saturday with a trip to Kilmarnock.