According to Matthew Barrows of the Sacramento Bee, like every other team in the NFL, the 49ers would love to have Nnamdi Asomugha on their defense. But they would be loath to get into a bidding war with big spenders like the Cowboys or Redskins.
Perhaps Asomugha likes the Bay Area, is impressed by the 49ers and gives the team a home-town discount. Or perhaps the 49ers conclude that the difference between what they might have to pay Nate Clements and what Asomugha wants is worth the cost. There will be discussions for sure, but Asomugha is likely to land elsewhere.