Celtic have announced that Kieran Tierney has returned to the club on a free transfer from Arsenal.The boyhood fan rose through the ranks at Parkhead and made 170 appearances, winning multiple

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(Reuters) -Celtic have signed Scotland left back Kieran Tierney from Arsenal on a five-year contract, the Scottish Premiership champions said on Tuesday. The 28-year-old, who made his senior debut at Celtic in 2015,