from Helene St. James of the Detroit Free Press,
If only one is brought back, the odds favor Gagner. He’s younger, and he can play both special teams. Ryan was limited to 33 games this season and 24 in 2019-20 — he took much of that season off to address a substance abuse issue — and has not played a full season since 2018-19. And while he expects to make a full recovery from surgery, it will impact his ability to train this offseason.
There is, of course, the possibility Yzerman brings both back.