I'd say a big no on this one.
Offensively, Henry's a well-preferred three point shooter and can really shoot them; however, with his lack of mid-range shots, poor mid-range shooting and good but not great free throw shooting, color me skeptical that he's a pure shooter; just a good shooter is more like it. Henry rarely takes shots inside and doesn't finish too well either, and will only dunk occasionally, and he doesn't really get tip-ins with his lack of zest for rebounding. His passing ability is relatively below average, but he doesn't turn the ball over either, so he knows his limitations as a role-playing niche specialist. It's just that he appears to be very one-dimensional offensively, largely as a good three point shooter (and not even a great one). His offensive impact was middling with Kansas last year.
Physically, Henry would fit in with the NBA, but won't stand out; he looks like an average-sized SF with decent leaping ability and lateral quickness, but only that, although he has good transition speed. He's lacking strength at the moment and that can hinder him against some matchups, but off-the-ball he does possess a long wingspan though and a knack for intercepting passes. His team defense appears to be very questionable though, and he's also quite a poor rebounder for his position on both ends of the court.
I know Henry's had James Posey comparisons bandied about him with the three point shooting/stealing knack, but I think Henry really lacks the strength and defensive instincts here. His upside is really that of a niche role player, with his uni-dimensional offensive game, but there's actually bust potential because if he doesn't develop defensively I don't think there's much that he can really hang his hat on to gain minutes. He's really a SF type in terms of game, and with Casspi, Garcia, and Greene capable of manning minutes here we already have enough young SFs, and Henry's not enticing enough for me at all to be worth a flyer on.