Oft-injured offensive tackle Jammal Brown’s contract is set to automatically void at 4 p.m. Friday, a move that will trigger $1.1 million in salary cap savings for the Washington Redskins. Brown, who didn’t play last season after failing to overcome a hip injury, in 2011 signed a five-year contract with the Redskins, who in 2010 acquired him via trade from the New Orleans Saints. He restructured his deal last season, and as a result, the remaining three years that were left on his contract will void. Brown will count $3.3 million in dead money against Washington’s salary cap this season, but the team will receive a savings of more than $4 million in 2014. The Redskins are believed to currently be roughly $4 million over the salary cap, but have until March 12 to trim that excess and create room for roster moves during the upcoming free agency signing period. It’s expected that the team will look to restructure the contract of cornerback DeAngelo Hall ($8 million cap hit), and possibly receiver Santana Moss ($6.16 million) as part of their cost-saving measures. Hall said at the end of the 2012 season he would be willing to re-work his contract so he could remain with the Redskins. But a person with knowledge of the situation said this week that such negotiations hadn’t yet begun.