Carragher said on Sky Sports: "Robertson is having a tough time and it's a very unforgiving position. He doesn’t look like he's running back fully, he's had a whack then gingerly goes to control the ball before getting a red card. He needs help. Liverpool haven't got any back-up and it's something they need to address in January."
He went on to add: "[Milos] Kerkez has been a revelation at Bournemouth. The technical director who brought him to Bournemouth (Richard Hughes) is now the sporting director at Liverpool. Kerkez looks like a full back and he's aggressive. He's been superb since he came into the Premier League and is one to watch in the future whether he stays or moves on."