"Those are the three he's pretty much cut it down to three weeks ago," Gillion told Scout.com. "He was waiting for our season to get over before he was going to take the visits."
Henry, a 6-foot-9 big man out of Fort Pierce (Fla.) Faith Baptist School, will take his first of three visits to South Carolina.
"He's going to South Carolina this weekend," Gillion said. "He hasn't set up his visits for South Florida or Miami. He'll probably do that by Friday or when he gets back from South Carolina on Monday."
South Carolina has plenty of connections to the South Florida area. Historically, Frank Martin has recruited the area well, plus one of his assistant coaches has known Henry since middle school.
"With South Carolina, he's familiar with Frank Martin," Gillion said. "He kind of likes that style, where he's up on you and pushes you to the limit."
"He has a very, very good relationship with Lamont Evans, who is actually from Broward County," Gillion said of the USC assistant. "He coached Team Breakdown and I actually grew up playing ball with him. He's known him since 8th grade."
The Hurricanes have aggressively pursued Henry and the top 100 prospect likes them because their head coach has been the point man.
"With Miami he likes their style of play," Gillion said. "Coach [Larranaga] has recruited him hard. He's been the lead person recruiting him."
While South Carolina and Miami have been on Henry for quite some time, South Florida has recruited him the longest.
"With South Florida, it's still the same," Gillion said. "Coach [Stan] Heath has been watching him play since middle school. Of all the three schools, coach Heath was the first person on him and has been recruiting him for a long, long time."
Henry, who averaged 18 points and 12 rebounds a game during his senior season, will make his college choice within the next month.
"He'll sign before April 15th," Gillion said. "He'll sign in the early signing period."
Henry is ranked No. 92 overall in the 2013 recruiting class.