However, after returning on loan the following year, Mirfin made his stay a permanent one and has gone on to line up over 100 times for us since.
Mirfin has been a key part of the United back four this season, making 33 appearances so far, while forming a formidable defensive partnership with Scotsman Murray Wallace in the process.
In addition, the 30-year-old has been part of a Scunthorpe backline which has kept 18 clean sheets in all competitions so far in the current campaign.
His deal will run until the summer of 2017.
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