article: The 23-year-old joined Livingston on a deal until the end of 2015-16 after leaving Dundee United in January. He previously spent the first part of last season on loan at Almondvale Stadium, and made a total of 30 appearances for Livi last term. McCallum, who has also played for Arbroath and Berwick, is the League Two side's 14th signing of the summer. Find all the latest football transfers on our dedicated page.
summary: Plymouth Argyle have signed former Livingston goalkeeper Marc McCallum on an undisclosed-length contract.