Arsenal defender and UFC star Conor McGregor have formed an unlikely relationship in recent years, with the pair full of respect for each other.A controversial figure in the world of UFC, McGregor has been known to divide opinion throughout his sporting career.Tierney is a very different character to the Irishman, but this has not stopped the duo developing a close friendship.McGregor is a lifelong Manchester United supporter, but has made clear his respect for Celtic on a number of occasions.Prior to joining Arsenal in 2019, Tierney captained the Scottish giants and was a fan-favourite at Celtic Park.McGregor is also a big admirer of the Scottish full-back, having been spotted wearing the shirt of Tierney when he was still at Celtic and.
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