Per Bruce Feldman: https://twitter.com/BruceFeldmanCFB/status/1083821173597585408
He graduated last month, so he'll be able to play immediately.
Seems like he had a solid 2017 (he caught the touchdown pass as time expired to beat Iowa) before having a disappointing season this year.
The 6-foot-4, 225-pound Johnson had a breakout redshirt sophomore season, hauling in 54 receptions for 701 yards. His 2018 season however was marred by drops and injuries, as Johnson only totaled 25 receptions for 352 yards in 10 games.
He apparently had some draft buzz heading into 2018.
The Penn State redshirt junior wide receiver had his name in some preseason mock drafts as a potential NFL first-round pick. In an early 2019 NFL mock draft by the Sporting News published in May, Johnson was predicted to go seventh overall in the first round.
Given how stacked Michigan's receiving corps is, I doubt that there would be any room for him, especially if he wants to make a big impression for the league, but I still thought this was interesting.