According to the Scout three-star offensive tackle, the Vols have all the right pieces in place to begin a climb back to prominence in the Southeastern Conference.
And it's those pieces that have St. Louis so high on the Vols.
"I really like Tennessee. It's one of those new, up and coming programs and I know where they're trying to get and I know they have the right things going to get there," St. Louis told InsideTennessee. "They have the right staff, the right coaches, the right facilities, the right place, the right tradition. It's going to be good to see where they end up in a couple of years."
The IMG Academy (Fla.) standout plans to visit Knoxville sometime after the dead period ends on Jan. 15.
And what he saw was an up-tempo offense.
At 6-foot-5, 302-pounds, St. Louis is the ideal build for a tackle in Tennessee's new offensive system. He's long, big and athletic.
While the class of 2015 prospect runs a pro-style offense in high school, he feels he can fit into any scheme.
"I think I fit any offense. I'm 300-pounds, but I don't look 300 pounds," he said. "I can move around and I can also put my hand down. I can go to a two-point in a pass. I can do anything you want me to do."
Tennessee offensive line coach Don Mahoney is serving as St. Louis' lead recruiter. The rising tackle prospect says he likes Mahoney's coaching style.
"I've gotten to know him really good. I like coach Mahoney. He's one of those really, really good, calm coaches," St. Louis told IT. "He's one of those coaches who takes his time with you. He's not the kind that yells and cusses you out. He just gets right to the point. I like the way he prepares his players."
St. Louis feels prepared to continue to develop into a formidable DI player, saying watching his IMG Academy teammates Michael O'Connor, a Penn State quarterback commit, and four-star running back Bo Scarbrough has helped him learn what it takes.
"It helps me a lot. Now I can see how they think and what they do that makes them DI players," St. Louis told IT.
InsideTennessee's Danny Parker contributed to this report