Flacco threw for 815 yards, two touchdowns, and six interceptions in four games this season for Cleveland.
Cincinnati have lost three straight games with Jake Browning as their starting QB following Joe Burrow's injury. They've been outscored 113-37 over the course of his three starts.
Browning has posted 516 passing yards, four touchdowns, and five interceptions in his three starts this season. He's coming off a loss to the Detroit Lions in which he threw a season-best 251 yards and three touchdowns that were unfortunately paired with three interceptions and a safety.
The 40-year-old and Super Bowl MVP Flacco will now be joining his fourth team in the past five years, the other two being the New York Jets and the Indianapolis Colts.
He'll be thrown to the wolves come Sunday as the Packers' defence currently ranks No. 4 in all of football. Cincinnati currently has the worst-rated offensive line (32nd), which ranks last in pass protection efficiency.
The Bengals currently boasts a 2-3 record and rank second in the AFC North Division, as the Ravens (1-4) and Browns (1-4) both rank below them with the Pittsburgh Steelers sitting pretty with a 3-1 record at the top.