At this point in free agency, any player who hasn't signed has a reason. This could be for money or term, or waiting out for their preferred team.
For Vancouver native Matt Dumba, it appears the latter is the case, as he only wants to play for his hometown.
The hard-hitting offensive defenseman had a great stretch in Minnesota, and will be a valuable NHLer to wherever signs him. He will also command a significant salary in today's NHL climate, which the Canucks will need to get creative to provide.