It's a two year deal:
ESPN - Roundup: Brunell agrees to two-year contract with Saints - NFL
Quarterback
Mark Brunell felt positive enough about his visit with the
New Orleans Saints that he decided to work out a deal instead of continuing a tour of interested team. Brunell agreed Thursday evening to a two-year contract with the Saints. Though the contract hasn't been finalized, Brunell agreed in principle to the numbers and the opportunity to back up starter
Drew Brees. Last year in Washington, Brunell lost the backup job
Todd Collins. When Collins re-signed at the start of free agency, Brunell knew he needed another team if he wanted to continue playing. The Saints were a good fit. New Orleans was close enough to his offseason home in Jacksonville, and the Saints were looking for an experienced hand coming off the bench.
-- John Clayton, ESPN.com