Cowboys owner Jerry Jones said Friday night he has ruled out re-signing Greg Hardy.The Cowboys are bracing for starting left-side defensive end DeMarcus Lawrence to be suspended the first four games of the 2016 season after he violated the league's substance abuse policy again. Lawrence led the Cowboys with eight sacks in 2015.The Cowboys also won't have defensive end Randy Gregory, who also is suspended for violating the NFL's drug policy, for the first four games.Vice President Stephen Jones also said the Cowboys would also not be re-signing DE Jeremy Mincey in 2016.