After four months out, MacLean made his return for the club, scoring twice in a 3–0 win over Motherwell on 25 February 2014. He remained in the first team for the remainder of the season and signed a contract extension to keep him for the next two years. Weeks after signing a new deal, MacLean started in the Scottish Cup Final, alongside his striking partner, Stevie May. With ten minutes remaining and St Johnstone winning 1–0, MacLean scored the second goal in the final after ""he slid in to challenge Cierzniak before turning the ball over the line while grounded."" In his celebrations, MacLean removed his shirt, resulting a yellow card. After the match, MacLean spoke that the scoring the goal was an incredible feeling and had no regrets of removing his shirt, insisting it was worth it.