Cheap, reliable, and experienced. Decent for a backup.
Still don't think Nørgaard is Arsenal quality but he's a very intelligent, reliable player and a warrior in the duels. Bendtner compared him to Arteta as a player which I think is pretty spot on. Like others mention, he'll be perfect for when Arteta wants to activate terrorist ball and defend a lead. Not one to put on when we're chasing though.