Agent Mino Rail has publicly said there's a "big chance" Erling Haaland will leave Borussia Dortmund this summer.

Bayern Munich, Real Madrid, Barcelona and Manchester City are all potential destinations for Haaland.

Haaland reportedly has a €75 million release clause in his contract beginning at the end of the current season.

Haaland has been identified as United's top target while City doesn't have a No. 9.

"He [Haaland] can and will take the next step," Raiola told Sport 1. "Bayern, Real, Barcelona, ​​City -- these are the big clubs he can join. When we moved to Dortmund, we all knew that this step would come.

"Maybe this summer, maybe the summer after. But there is a big chance that Erling will leave this summer."