The 26-year-old joins the club after his departure from Scottish Championship side Partick Thistle at the end of last season, having made 89 appearances for the Jags in a two-year second spell at Firhill – he previously played for Thistle on loan from Livingston in 2018/19.

A product of the Motherwell academy, McMillan made his first team debut for the Well in 2016, making 16 appearances for the club before being loaned to Livingston, for whom he later joined permanently. 

McMillan played 86 times in that spell for Livi, over four seasons, and scored two goals.

Operating primarily as a right back, McMillan will add to Gary Caldwell’s defensive options ahead of the 2024/25 season. 

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