The St. Louis Rams called Brett Favre to gauge his interest in returning to the NFL following the season-ending injury to Sam Bradford.

Favre is now a 44-year-old grandfather and hasn't played since December 2010.

One source familiar with the Rams' conversations said that if Favre took them up on their interest, "it could break Twitter."

Favre said he's in football shape, but ruled out a final return to the NFL.

"It's flattering, but you know there's no way I'm going to do that," he said.