well 7 years to play 6 seasons (instead of 6 to play 5), but I get what you're saying.
IF he is granted the medical waiver, it will be 6 years total of participation with a free 7th due to COVID.
For anyone that wants the breakdown on why I think he has a good case at getting a medical waiver if he wants to apply:
1) 2016 was True Freshman year at BYU and was redshirted
17 Mormon Mission
18 Mormon Mission
2) 2019 RS Freshman BYU
3) 2020 RS Soph BYU ****but COVID so doesn't count toward eligibility
4) 21 RS BYU Junior BYU
5) 22 RS BYU Senior BYU
6) 23 Super (RS)Senior## But only played 29 snaps at UT due to injury
7) 24 Medical Hardship Waiver???
So he's already played 6 seasons total, but 1 (COVID) doesn't count, so really 5, but technically only 4 plus 29 snaps in his 5th countable season of eligibility. If he comes back he can still stay under the 30%, which is 4 games of a season. So he could come back in November, play the last 2-3 games, but might have to skip a conference championship if that were to happen. It's very confusing on the bowl game. Would be a nice problem to have if/when we get to that point. He might have to hold out depending on if/when he might come back and play in 23.