Ole Gunnar Solskjaer would not rule out a move for Haaland in the future.
Solskjaer has worked with Haaland at Molde where he was the manager during two spells 2011-14 and 2015-18.
In 2019, United were close to landing the Norwegian international but a move failed to materialise due to financial constraints.
Solskjaer is a fan of the 20-year old and tried to convince him to move to Old Trafford before he chose to move to Germany.
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“When you have had kids and players through as a coach, you follow them and I keep in touch with Erling,” Solskjaer said.
“It’s great to see him become the player he has become and [how] he works to improve all the time. He’s a Dortmund player – we just wish him well there and let’s see what life will bring later on.
“You know I can’t speak about Erling because he’s at Borussia Dortmund, and it’s disrespectful to talk too much about it, apart from that I know him and I speak to him. Who wasn’t interested in him a year ago? Everybody would say you would take the best players in the world and Erling is a top player.”