I don’t get the burrow or Bust thing?

[BengalsFan1986]

“One evaluator said Burrow entered the season as a likely third- or fourth-round pick, the kind of choice a franchise hopes would yield a stalwart backup.“

https://www.washingtonpost.com/sports/2019/11/14/joe-burrow-nfl-draft/

That’s a quote from a Washington Post article I found in about 30 seconds of looking. Apparently he wasn’t quite a “unanimous 7th round pick.”