"It's been fun New Orleans," Bush posted on his Twitter page Thursday night.
Bush was not expected to return to the Saints next season regardless of what the team did because he has so far declined to take a pay cut when the subject was broached before the NFL lockout began. Bush is due approximately $11.8 million in the 2011 season in base salary and bonuses.
Bush said in January that he didn't expect to return to the team. The No. 2 overall pick in the 2006 draft, he played a critical role in reviving the Saints after Hurricane Katrina and helped the team to the Super Bowl title in the 2009 season. However, Bush was constantly limited by injuries and never developed into a consistent pure running back. He played in only 60 of 80 regular-season games and missed eight games with a broken leg last season. He was more successful as a pass receiver, but the Saints aren't expected to keep him just for that skill at his current price, a source familiar with the situation said.