Last time this idea was brought up, the Danish response was clear: Denmark can’t sell Greenland because it’s not ours to sell. The Greenlanders rejected the offer.

There’s been decades of collaboration between Denmark and Greenland on establishing autonomy and independence of Greenland. It appears they are not interested in becoming integrated into a different state, but would rather continue that process.

But indeed, it’s up to the people of Greenland.