"Vikings quarterback Sage Rosenfels broke his silence on the team's interest in Brett Favre.

But Rosenfels didn't have much to say about the courtship.

"It doesn't make any sense to comment on something that hasn't happened," Rosenfels, a native of Maquoketa, Iowa, told the Des Moines Register.

The Vikings acquired Rosenfels in a trade with the Houston Texans in February.

Favre's agent, Bus Cook, told the Hattiesburg (Miss.) American in a story published Sunday that "there's absolutely no substance to all the speculation" about his client coming out of retirement to play for the Vikings.

"I can't talk about that stuff without (Favre's) written permission," Cook said.

Favre retired for the second time in February, and he was granted his release from the New York Jets a few weeks ago. "