In short, no. They have kept in close to vest.
Boston and Nashville GMs both attended his last game vs Brown (Although Sweeney may have been there to see Jacob Quillan (who is rumored to be favoring Boston). Rod Brind'Amour's son (Carolina coach) played with him last year. He has attended training camps with Florida and Nashville, but does has said he doesn't have any ties to either. One rumor that was floated earlier in season was that he, Quillon were going to join Lipkin in Arizona (much like the Freshman BC line arrived as a group). He was rumored to have had offers from about twenty teams last year. There was some talk about Boston, Carolina and Detroit having the best chances of signing him then (although I believe the Detroit link was built off a rumor based on a friends instagram picture). This year, I have also seen Colorado, New Jersey, San Jose and Vegas linked to him (NJ and SJ General Managers have attended games in person).
He will get a lot more attention, and likely more offers, than any NCAA free agent in years.
If I had to guess: Favorites are Carolina, Nashville (darkhorse: Pittsburgh)