Scottish champions Celtic are looking to bolster their squad in the summer as they aim to win their 10th Scottish Premiership title in a row.
While signing a goalkeeper remains a top priority, the Bhoys would also require a midfielder and a central defender as well this summer.
According to reports from the Daily Record, the Hoops could be set to step up their interest in David Turnbull once again.
Last summer, a £3million move for the youngster collapsed after a medical flagged up a potentially serious knee issue.
However, the 21-year-old midfielder remains on Celtic’s radar and was watched during a closed-door friendly with Kilmarnock on Friday.