Speaking to Sky Sports, Robertson shared his thoughts on the player Liverpool fans hope to soon welcome to Merseyside.
"He was excellent against us (Scotland, at Euro 2024) I do remember that," he said.
"Obviously that game was extremely tough for us, but he was excellent, he was the one causing us problems in the half-space, running in behind, he can mix it up. I haven't seen too much of him but I have played against him and that was enough to see he was going to be a top player. We played Leverkusen in the Champions League this year as well and we dominated that game a bit more as well, so it was probably a bit more difficult for him, but certainly in the German team against us he was excellent.
"We're certainly linked with him, that's for sure! You can't miss it, you can't not see it. But if we get him through then an exciting talent is through the door. We've already got a lot of exciting talent in there. He's a right good player. He'll only help us, and if he does get through the door then we'll be excited to play with him."