Liverpool fullback Andy Robertson believes Chelsea striker Eden Hazard is a "special" player.
The pair will face off this Friday when Scotland take on Belgium.
Speaking about facing Hazard, the 24-year-old said: "He is probably in the top five [players in the world] at the minute. I have come up against him many times so I know what threat he can have.
"Even if he is having a quiet game, he can pop up at any point and turn a game. That is what we are up against.
"He is special. The way he turns and gets at players and commits two or three defenders, there's not many that have that.
"He has been unbelievable for Chelsea and Belgium and it is somebody that we need to watch."