ATLANTA — The Atlanta Falcons gave up only a seventh-round draft pick on Wednesday when they acquired four-time Pro Bowl cornerback Asante Samuel from the Philadelphia Eagles. The Falcons announced the trade after Samuel agreed to restructure his contract to a three-year, $18.5 million deal. His contract with Philadelphia called for him to earn $9.9 million in 2012 and $11.4 million in 2013.