Kieran Tierney insists he knew the Arsenal star was destined for the top from the first time he saw him. Goalkeeper Colin McCabe never made it at Celtic but spent four years in the youth team before returning to the Republic of Ireland with Bohemians and then Shelbourne.
But from his first trial with Celtic, he knew Tierney was going to go far because of the way he handled himself even at a young age.
The left back made his first team debut as a 17-year-old before being a huge part of the squad under Brendan Rodgers and earning a £25million move to Arsenal.
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