Next DC candidate: 49ers' Greg Manusky

San Francisco defensive coordinator Greg Manusky is scheduled to visit Valley Ranch today to speak with coach Jason Garrett about the Cowboys' job opening.

Manusky has been the 49ers' defensive coordinator the last four seasons. Last year, the 49ers' defense finished 13th overall. The last three seasons, Manusky's defense has finished no higher than 13th. It finished 15th in 2009.

Manusky has become a hot coach because of his skills to teach the 3-4 defense. He interviewed with Arizona on Tuesday and is expected to get a look in San Diego.

The Cowboys have also talked to Vic Fangio, but he's expected to take over in San Francisco for new coach Jim Harbaugh. Fangio worked for Harbaugh at Stanford.

As for Manusky, the Cowboys tried to hire him from San Diego in 2007, but he couldn't get out of his contract.

With Harbaugh trying to hire his own staff, he's given Manusky permission to seek other jobs despite being under contract with the 49ers.