Andy Robertson might have to think again if he has any designs on joining boyhood club Celtic this summer, according to former Scotland international Pat Nevin.
No decision has been made on Robertson's Liverpool future as yet, but the Scotland captain will be out of contract at the end of the campaign.
Having lost his place as first-choice left-back to Milos Kerkez this season, the Reds vice-captain's future has been the subject of much debate.
Robertson was targeted by Tottenham Hotspur in a surprise move in January, only for the Reds to pull the plug on any discussions.
The two-time Premier League and Champions League winner was also eyed by Atletico Madrid last summer, but a return home to Glasgow has also often been mooted for the 32-year-old, who was released by Celtic when he was 15.
Former Arsenal defender Kieran Tierney returned to Celtic after six years away last year, and possibility of the pair linking up on the left flank as they do for their country has been mooted.
Ex Everton and Tranmere winger Nevin, however, thinks a move may not be possible.
"It is interesting because without all the technical stuff about styles etc, Tierney and Robertson, when they play for Scotland, in a back three, one of them, usually Tierney is the left centre-back. He played there for Arsenal quite a few times and was very good at that," Nevin told AceOdds.com.
"Scotland are amazing down the left-hand side because they work well as a pair. So can you play with both of them in the same team? Yes, you can. Robertson can play as a wing-back and Tierney can play the centre-back role, so can Robbo.
"The only problem is how do you fit that into a 4-2-3-1, which is what most teams are playing. That's harder.
"If Martin O'Neill stays at Celtic, which I don't know if he will, he always used to use a back three when he was first there and it was incredibly successful.
"It'll come down to the cost because I'm afraid Celtic have a lot of other jobs to do other than left full-back. They've got creative jobs to do. They'll get Jota (their Portuguese winger who suffered an ACL injury last year) back next season which will make a big difference.
"So it's a nice idea and it would fit well but it is also A) costly and B) if you're going to be utterly heartless about it, there ain't no sell-on value. And that's not Celtic's model, most of the time."
