That's a high bar ivo. Who's in that discussion now? Just the guys with 4+ rings?
Rodgers needs more championships for sure - and MVP awards - but there isn't anyone who's tracking with Rodgers' production at this point in his career. He'd be in my discussion with 3 rings and 6 more years of continued performance like he's had for sure.
I think football is too much of a team sport to base an analysis of the best ever at any position first and foremost on rings - even QB. I'm not saying they're worthless by any stretch (Manning) but I'm looking at all of what they individually do on the field, including their intangible contribution to winning games (Starr/Montana) first.
Bart Starr, Otto graham, joe Montana, and Brady all have real solid arguments to the crown.
You gotta excel in the post season, otherwise you land in that 2nd tier of guys that didn't.