Posted by ESPN.com's Tim Graham
That probably explains why Favre faltered over the final five weeks, but how the news will affect Favre's decision to play for the New York Jets in 2009 is hard to say at this early juncture.
The diagnosis should only reinforce Woody Johnson's desire to have him back. Werder's story states Favre would need nothing more that arthroscopic surgery and could play without having the procedure at all.
But should the Jets want Favre back?
Favre will turn 40 during next season and obviously is prone to injury. He has started 269 straight games, one shy of Jim Marshall's NFL record, and clearly chooses to play through pain even when it costs his team.
We don't know how Kellen Clemens was looking in practice, but it's difficult to imagine him having worse numbers than Favre over the Jets' final five games. Favre threw two touchdowns and nine interceptions. He had passer ratings of 60.9, 60.8, 61.4, 48.7 and 45.1 in that span.
About the only positive guarantee Favre provides the Jets, as they get ready to move into a new stadium, is keeping them relevant alongside the Giants and Yankees in the New York sports landscape. But that's for as long as he can stay on the field.