TAMPA, Fla. -- Jon Gruden is making good on his promise to make the competition for Tampa Bay's starting quarterback job interesting next season.

The Buccaneers agreed to contract terms Saturday with free agent Rob Johnson, who was released by the Buffalo Bills in a salary cap move last month.

The length of the deal and financial terms were not disclosed.

Johnson played four mostly disappointing seasons with the Bills after spending the first three years of his career with the Jacksonville Jaguars.

While he's thrown for 5,166 yards with 29 touchdowns and 20 interceptions as a pro, injuries and inconsistency prevented him from fulfilling expectations as the Bills' quarterback of the future.

Despite making the playoffs four of the past five seasons under Tony Dungy, the Bucs fired the defensive-minded coach because of the club's shortcomings on offense.