Striker Scott McDonald has returned to Motherwell for a second spell after leaving Millwall during the January transfer window.
The 31-year-old Aussie scored 45 times in a three-year stint at Fir Park between 2004 and 2007 before moving on to Celtic then Middlesbrough.
McDonald joined Millwall in July 2013 but left the London club last month and could feature for Ian Baraclough's side in Saturday's Premiership game at home to Inverness Caley Thistle.
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