Former Arsenal goalkeeper Jens Lehmann says Erling Haaland is not "world class" with the striker a major injury doubt to face Rangers.
The 21-year-old is one of the most coveted strikers in Europe, having banged in 80 goals in just 79 games for Borussia Dortmund.
This season though he's been struggling with muscular issues, and Haaland is a major doubt for the Europa League first leg against Rangers on Thursday.