from Ansar Khan of Mlive,
The same rules used for the 2017 Vegas expansion draft will apply.
Teams will be allowed to protect seven forwards, three defensemen and one goaltender (or eight skaters regardless of position and one goalie). Players with a no-movement clause must be protected. Players scheduled to become unrestricted free agents on July 1, 2021 are exempt. Players who will have two or fewer years of pro experience (NHL and AHL only) will be exempt....
At forward, the Red Wings are certain to protect Dylan Larkin, Anthony Mantha, Tyler Bertuzzi, Filip Zadina and Robby Fabbri. The other two slots could be used for Evgeny Svechnikov and Givani Smith. If they re-sign Luke Glendening, he could be protected or exposed. Or they might acquire someone in a trade or through free agency they would opt to protect.
The only other forwards under contract for 2021-22 are Justin Abdelkader and Frans Nielsen, who surely won’t be protected and are also buyout candidates in 2021. If Christoffer Ehn, Adam Erne and/or Dmytro Timashov are signed through 2021-22, they are likely to be exposed.
Center prospect Joe Veleno is exempt.
On defense, they would protect Filip Hronek, Dennis Cholowski and either Danny DeKeyser or someone acquired through trade or free agency. Moritz Seider and Gustav Lindstrom are exempt.