A familiar refrain echoes after every NFL draft class: Wait until next year's quarterback crop.

Every team wants a chance to draft its next great quarterback because the search for one never stops, especially for teams that lack a quality starter.

The following six future NFL prospects have already displayed franchise-caliber ability. Rebuilding teams and those with aging quarterbacks should be focused on these players as they look for their next superstar signal-callers.

Cincinnati Bengals: Justin Herbert, Oregon

Justin Herbert's 2018 stats: 59.