"We'll see what happens there," said Bowles, who once coached in Dallas. "If that doesn't work out, hopefully something else comes up."
What came up were the defensive coordinator duties, which former Wade Phillips did for two seasons while also serving as head coach. Phillips was fired after a 1-7 start this season.
Miami's staff just went through a tumultous week, with top team officials interviewing Stanford's Jim Harbaugh for the head-coaching job even though Tony Sparano remained under contract. Harbaugh took the San Francisco 49ers' head-coaching job instead, and the Dolphinstried to make good with Sparano on Saturday by extending his contract through 2013.
Nolan became the 49ers' head coach in 2005, going 18-37 before he was fired midway through the 2008 season.
The Associated Press contributed to this report.