Yep. Then use the money saved to beef up the trenches through FA and draft. Sign a guy like Fitzpatrick to come in while we groom a young QB for next year or so.
We hear the phrase "grooming a young qb" all the time, but in general there is really no such thing, other than his learning the playbook and practicing with the players. And even the practices are limited since the starter will get most of the reps. The rookie will get pre-season reps but how many of the other starters play? Teams don't run much but a basic offense in pre-season, and the rookie has probably run those types of plays in college anyway.
There's no substitution for playing regular season games, if your o-line is atrocious then don't play your starter, getting him beat to death and having him lose lots of games is no help. In that case sign a veteran to play while you draft or sign free agents to build the line for your rookie. But he's still not doing much but holding a clipboard..
Otherwise put the rookie in and let him learn. If he's so great as to justify a very high draft pick, then he's ready to learn. Was Aikman "groomed" before he became the starter? No.
Was Roger? He played in 14 games total in his first 2 years, and that was back when they only played 14 games a season, so he was in on half the games. That's where he got "groomed". Goff started 7 games his first year, and was in the SB by his third year.
If you spend high capital for a rookie qb, get him in there asap, in most cases...