There are plenty of questions about Aaron Rodgers at this point in his career, especially being just two years removed from a torn Achilles, making his signing with the Pittsburgh Steelers an interesting fit.
Despite questions about his mobility, there are no real ones about the arm strength, quick release or even the ability to read defenses quickly and win with his mind. The questions about his age and mobility are loud though, especially his age.
At 41 years old and turning 42 during the season, Rodgers is aiming to do something only one quarterback in NFL history has done 42 and over: throw at least 100 passes in a season and have a QB rating above 76.