By Andrew Holleran The Dallas Cowboys could look to add a former NFC East foe to their roster this offseason. Mike McCarthy’s team is in need of a boost at pass rusher. The Cowboys let Randy Gregory leave for the Denver Broncos this offseason. Dallas has failed to sign big names like Von Miller in free agency. A former New York Giants star could be an option. According to a report from ESPN, former New York Giants and Tampa Bay Buccaneers standout Jason Pierre-Paul is an option for Dallas. “Cowboys could go with multiple veteran pass-rushers in free agency to help offset loss of Randy Gregory….