I like Matthews a lot too, he performed very well for an undrafted rookie free agent. Unfortunately, he is restricted, but Korver is also a free agent this year and he is unrestricted. It will be interesting to see if they hold onto both of them or let one go. If they let either of them go, I would take a look.
If he's an RFA maybe we can work out a sign and trade. We might be able to take back a contract or two because we have Curry's expiring...then again, Utah isn't really a team with a whole lot of bad contracts.