Following the breakdown of their move for Fulham left-back Ryan Sessegnon, Liverpool could turn their attention to Celtic’s Kieran Tierney.
The Reds had previously viewed Cottagers teenager Sessegnon as the ideal addition to deputise for first-choice option James Milner.
But with the England U19s international seemingly preferring to remain in London, Jurgen Klopp has been forced to consider his options for the transfer window.
Alberto Moreno is expected to leave this summer, with the Reds hoping to seal a £12 million deal and AC Milan, Inter Milan and sides from La Liga interested.
The Spaniard’s departure would require a signing to the fill the void, and though Klopp is focusing on other areas at this stage, the issue will need to be addressed before September.
According to the Mirror, this could see him turn to Celtic’s impressive young left-back Tierney, who has progressed into one of the standout performers for Brendan Rodgers’ title-winners.
Tierney made 40 appearances for the Scottish side in all competitions last season, including nine in the Champions League, laying on 12 goals for his team-mates.
The veracity of this report remains to be seen, however, along with whether the 20-year-old Scot would be open to leaving Glasgow.
Signing Robertson may be an easier feat for the Reds, with Hull suffering relegation from the Premier League in May.
The Tigers activated an automatic one-year extension to the 23-year-old’s contract in December, but he is unlikely to garner a significant transfer fee either way.
For example, Scotland winger Robert Snodgrass left the club for West Ham United shortly after his own deal was extended, with the east London side paying £10.2 million to secure his services.
Tierney has four years left on his contract with Celtic, having agreed a new deal at the beginning of last season.
“I’m obviously delighted to be here, my future is only here,” he said on putting pen to paper, serving as an emphatic declaration of his intent.