Bayern Munich beat Borussia Dortmund in 'Der Klassiker'. The Bavarians won at Signal Iduna Park in a game which ended 2-3, which, for Haaland, was decided by the referee's performance.
In comments after the game to 'Viaplay Football', the scorer of Dortmund's second goal was clear: "I think it was a scandal when it comes to the referee," he said.
Haaland seemed especially anger by a penalty decision which did not go in Dortmund's favour involving Lucas Hernandez: "It was a clear penalty on Reus. I said to the referee (Felix Zwayer): 'Why didn't you just go and look at the monitor?' and he said 'there's no need' like an arrogant... No, I have to calm myself a little."
In fact, he ended up retweeting a message against the match referee. The Norwegian shared a post from an accont which reports on Dortmund news and he added a thumb down. He later deleted it though.