GOTTA STAY HEALTHY TMZSports.com
Jets fans are going to love this ... Brett Favre tells TMZ Sports that as long as Aaron Rodgers stays healthy this season -- New York will compete for an AFC Championship.
Favre raved about his former teammate in the leadup to New York's opening-season game against the San Francisco 49ers ... explaining to us he truly believes the future Hall of Famer is still "arguably the greatest playmaker in the game right now."

Favre said that no matter what breaks down around Aaron, he can fix it -- which is something New York teams have historically struggled with throughout the years.