The Pirates have agreed to terms with No. 32 overall draft pick Ke'Bryan Hayes, Howard Chen of CSN Houston tweets (via Pirates Prospects). There's no word on the bonus, although the allotted value of the pick was $1,855,000, and I imagine Hayes will get pretty close to that amount. Hayes was committed to the University of Tennessee, although he was considered signable.
Hayes, the son of MLB veteran and former Pirate Charlie Hayes, is a righty-hitting third baseman, like his father. He's a line-drive hitter who might eventually develop a bit of power as well. He isn't fast and had to lose a considerable amount of weight a couple years back, so conditioning will be an issue, but he has the hands and arm to stick at third base.
Hayes is just 18, so the Pirates will probably start him slowly, even though he's regarded as being a pretty advanced hitter for his age. He will likely debut in the Gulf Coast League, perhaps with the possibility of moving up to Bristol at some point.
(Scouting information via MLB.com and Baseball America.)