HBO Sport president Ross Greenburg said he hasn?t ruled out the Cowboys being on ?Hard Knocks? next summer when they return to San Antonio for camp. Greenburg said he also recently talked with Cowboys owner Jerry Jones about doing a series during the season. ?You never know,? Greenburg said Monday when asked if the Cowboys could be featured on ?Hard Knocks? in back-to-back years. ?I?d never rule it out because Jerry thinks so progressively, so dynamically, and this is a team that is on the cusp of doing something great this year. If they were to win the Super Bowl, it wouldn?t be bad to do the Super Bowl champions (on ?Hard Knocks?). ?The other thing is (Jones) opened the door in a conference call last Friday to doing (a series on) the Cowboys during the regular season. Can you imagine? That?s a dream we?ve always had, so maybe someday that will happen as well.?