(Beaverton, OR)  --  Nike is signing Cleveland Cavaliers superstar LeBron James to a lifetime contract.  ESPN reports it's the largest single athlete guarantee in the sports apparel giant's 44-year history, although no financial terms have been released.  The four-time NBA MVP originally signed a seven-year, 93-million-dollar contract with Nike out of high school in 2003.  He then re-signed with the company in 2010.