Haaland has been linked with United this week.
Solskjaer said at today's Europa League presser: “I think when you have had kids and players through as a coach you follow them.
“I keep in touch with Erling - it is great to see him become the player he has become.
“He is a Dortmund player and we wish him well there. Let's see what life will bring later on."
He added: “I'm not surprised that teams are interested in him.
“One, he is a very good footballer, and two, he is a fantastic human being.
“I am sure Juan has been able to speak to other clubs if he wanted to. We have a good dialogue."