Based on the clips that were posted, he might not be an elite athlete, but he looks more athletic than Cam. I don't recall Cam, or even Newton, dunking often or at all, while Furphy had a couple dunks late in those clips. Even at 6-4, flushing one during a game doesn't happen unless you have some solid level of athleticism.
He'd be fine here if teamed with 1 to 2 more athletic perimeter players. Hurley teaches solid team D. Granted, if you have too many moderate to low end athletes that lack quickness, that can be exposed by well coached athletic teams. Look at last season. They defended pretty good with Cam and Newton in the game, though having Castle or Has, and/or Stewart on the floor, and Clingan cleaning up inside when things broke down, helped tighten the D.
On offense, he'd fit right in, though his game does seem to have some redundancy with Adams. They both have very similar scoring abilities, especially the catch and shoot off of multi-acton, though Furphy seems to handle the ball more, initiate the offense and create his own shot, where Adams seems to be developing a catch, curl and drive game to compliment his deep catch a shoot. They both seem crafty creating space for their 3-ball when they do catch the ball.
I always find it fascinating that many college and pro ballers don't know how to create space and knock 'em down. For at college level, Cam was exception at that. At the pro level, Brown and Tatum of the C's are very good at that, to name a few. There are many others in the NBA who are good at it, though it's just surprising more haven't developed that at that next level. I'm sure those who do have been coached well and have worked their asses off developing those skills.