Tierney is one of the best players at Scottish Premiership giants Celtic and is one of the best young defenders in Europe.
The 20-year-old operates as a left-back and has firmly established himself as a key figure in Brendan Rodgers’s team.
Former Celtic midfielder and manager Hay has suggested that Tierney could be deployed as a centre-back in the wake of the injury suffered by Dedryck Boyata.
“As for the Celtic defence, fortunately they have the depth to cope with his absence,” Hay wrote in The Glasgow Evening Times.
“Erik Sviatchenko can step in there beside Jozo Simunovic no problem at all, and if it comes to it, even Kieran Tierney could play at centre-half with Emilio Izaguirre coming in at left-back.
“Of course, the young man was seen as part of a back three last season at times, and he handled it well, and it was interesting to hear Brendan Rodgers talking about Tierney as a possible long-term solution for Scotland in that area.
“He played really well on the left of a three against England, but given how well he has adapted to everything else that has been thrown at him in his short career so far, it wouldn’t surprise me to see him flourish at centre-half as part of a duo either.”
Boyata is a very good defender and is an important player for Celtic, who will miss him during the upcoming Champions League qualifiers.
Erik Sviatchenko and Kristoffer Ajer can step in for the Belgium international, but it would not be a bad idea to deploy Tierney as a centre-back.
It could be tempting to dip into the transfer market, but Rodgers would be wise to heed Hay’s advice and try Tierney as a central defender.