“It’s hard, but why not? I see it as feasible.”
Haaland has a release clause in his Dortmund contract of around £68m but that does not become active until the summer of 2022.
Therefore Dortmund could look to start a bidding war for him this summer and sell him for considerably more.
United were keen on signing Haaland before he moved to the Bundesliga in January 2020.
Red Devils boss Ole Gunnar Solskjaer recently gave his opinion on the forward, predicting a big future for his Norwegian compatriot.