The Raiders are about to kick off free agency with a bang.
Oakland and guard Kelechi Osemele have reached an agreement in principle on a contract, a source informed on the negotiations told NFL Media Insider Rand Getlin.
A run-blocking stud on the Ravens offensive line, Osemele is ranked No. 3 overall on Around The NFL's list of the top 99 available players this offseason.
Around The NFL will have more on this shortly.