IIRC, yes. I was actually going to comment on this. Him being listed as undrafted is a bit misleading. He picked the Wings over many teams pursuing him.
Nothing misleading about it, DeKeyser was not drafted by an NHL team.
He, and a lot of other NCAA players, are late bloomers. In most cases, they aren't the kids who are ready to play major junior at 16 or 17. Major junior is usually a faster track to the pros... you're out of eligibility at 20, which would be the age of a college player in the middle of his career. Some players benefit more from the CHL, others benefit more from the NCAA. It's up to each player, his family, and his advisors to decide which route is better for that player.