"Lots and lots of mail," he says.
Yeager met Dan Enos, the Spartan coach who recruits him and many other Detroit-area prospects, at the spring game.
"He's a pretty cool guy. He had his kids along and they were all just, 'I hope you come to Michigan State'," Yeager said with a chuckle. "It was just a fun time."
Yeager, who is still waiting for his first offer, has been on campus a couple of times now and can't get enough.
"It's beautiful. It's very, very beautiful," he says. "I just can't wait to see that building (Duffy Daugherty Football Building expansion) they're building with the green lights, it's just gonna be so beautiful."
Yeager also got a chance to meet head coach Mark Dantonio, who first appeared like most other coaches he'd met, with a gruff exterior demeanor.
"But deep inside, when you get to know him, he's not really that (way)," he says. "I could tell he's a no-nonsense coach, but he just wants the best out of his players."
Michigan State is recruiting him the hardest, Yeager reports, followed by Toledo, who is also very interested.
Summer camps are on the agenda and Yeager will be back in East Lansing in July for an offensive/defensive line camp.
Although the 6-foot-3, 250-pound athlete plays on both sides of the line for Detroit King, MSU and others project him as a defensive end.
"The best thing that helps me is my knowledge of the game," he says, pointing to his experience on both sides of the ball.
"I know by their stance what kind of play they're going to run — if they're going to shoot out or step back and pass block. I can just see by how much pressure they put on their fingers (in a 3-point stance) and all kinds of keys that just help me get off the ball and just go."
As for what he's working on, Yeager says it's all about speed. Currently he reports a 4.8 in the 40-yard dash, but he wants to trim a few tenths of a second off that time to 4.6 or 4.5, "like (USC bound) Nicholas Perry from our team last year," Yeager says.
"I just got to get faster, faster, faster," he says. "Speed kills. On any level of football, speed kills."