Can I manage my friend's home as a rental w/o realtor's licence

[Josh Collins]

My friend just took a job in the Netherlands and is moving to Europe in a month.  He wants me to manage his property for him while he is gone.  I have storage facilities and have had other rentals myself.  I'm wondering if, legally, I can do this for him.  My research says I need to have a realtor's license to do this for him.  Can anyone confirm this or suggest alternatives for me? Me and the house are in MN.  Thanks in advance.