The Baltimore Ravens were unable to work out a restructured deal for Vonta Leach and plan to either release or trade the three-time Pro Bowl fullback, a league source told ESPN NFL Insider Adam Schefter.

Leach, one of the NFL's best lead blockers, is due to make $3 million this season. The nine-year veteran made the Pro Bowl in each of the last two seasons with the Ravens.

Leach, 31, indicated that his stint with the Ravens was over in a series of tweets Monday,

"Thanks ravens organization for a great two years," Leach wrote on his Twitter account. "I came here and did what we set out to do and that's win the Super Bowl. My time here is up but what we accomplished, we will be forever linked. Thank the fans for accepting me and my family to Bmore."

Leach has rushed for 749 yards and four touchdowns in 130 career games with the Ravens, Houston Texans and Green Bay Packers. He also made the Pro Bowl in 2010 as a member of the Texans.

The reigning Super Bowl champion Ravens figure to give rookie fullback Kyle Juszczyk, a fourth-round draft selection this past April, the first opportunity to replace Leach.