There's little doubt the San Francisco 49ers' biggest question area is at cornerback because of all the flux this offseason.So the fact two veteran cornerbacks were released Friday can't go unnoticed. Kansas City cut Brandon Flowers and Detroit jettisoned Chris Houston. Flowers is likely more intriguing because he has been the better player, while Houston is coming off an injury.Could the 49ers make a run at Flowers?Ultimately, I'd expect Flowers to get a better deal elsewhere.