On Saturday, the Fort Wayne (Ind.) Bishop Luers standout go his chance, after spending the day in Ann Arbor for an unofficial visit.
"Overall the visit went real well," Mack said. "I was able to get up there and see what Coach [Jim] Harbaugh was doing. ... I was able to see the new culture and see what he was doing with the team.
"When we were there we watched practice from 11-3 p.m. Then we went to the hockey game. I was able to sit down with Coach [Jedd] Fisch and Coach Harbaugh and talk to them for a good while. That was real neat to see what they have to offer and he's going to do with Michigan."
Mack, who is rated the No. 84 player in the latest Scout.com player rankings, continued to rave about his visit with Harbaugh.
"I can't be more impressed with Harbaugh," Mack said. "His career background is crazy. He's straight from the pros. You're not going to learn anything better. You're playing in the pro-style offense. They would probably put me on the outside.
"Another plus that they got. They don't care who you are. If you come in and play and execute -- you're playing. Right now Alex Malzone is the first guy in the lineup. He's been competing and working and doing what he needs to do to get done. That's something that is good. Whoever is executing the best -- they'll play.
"He really just said everything they got my interest. it was just real good and educational."
After his visit, where do the Wolverines now stand in his recruitment?
"Now that I know I am a priority of theirs and I know I can go there," Mack said. "They are definitely up there. Just because their network is crazy. The opportunities after college are great. Being able to have such an elite coaching staff. Also, the opportunity. I know I can come in and what I need to get done to play."
Mack says is likely to visit again. Next time, however, he says he will visit with his parents.
In no particular order, Mack says his top schools of interest are Ohio State Michigan State, Michigan, Vanderbilt and Tennessee. He also noted he has plans this spring/summer to see Michigan State, Ohio State, Notre Dame, Tennessee and South Carolina.
Mack is planning to announce his commitment on June 7.