The photo, posted on Instagram, shows Larsson dressed in a suit while van Dijk and Robertson are in training clothes. Robertson wrote 'Kungarnas kung' (King of kings) on the photo, a tribute to the Swedish striker. All three players have played for Celtic, where Larsson is considered one of the club's greatest players.
Robertson, born in Glasgow, was in Celtic's youth team when Larsson was in the first team. Larsson also played for Manchester United during his career. It is unclear why Larsson attended the match or whether the photo was taken at Anfield.
King of kings