Championship side Millwall have signed defender Murray Wallace from Scunthorpe United for an undisclosed fee.
The 25-year-old centre-back, who has represented Scotland at Under-21 level, has agreed a "long-term" contract with the Lions.
Wallace, who can also play at left-back, scored five goals in 132 appearances for the Iron after joining them from Huddersfield in January 2016.
He is Millwall's first signing of the summer transfer window.
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