A big AEW star may be hitting the free agent market in the near future, and we mean big in the literal sense. He's seven feet tall, 276 pounds, and his All Elite Wrestling contract is reportedly about to expire. Sean Ross Sapp of Fightful Select broke the news ahead of Wednesday's episode of AEW Dynamite that Big Bill, real name William Morrissey, is quickly approaching his contract expiration date. "Sources that Fightful Select spoke with in April were of the belief that as things stood at that point, Bill's AEW deal was set to expire at the end of May or start of June. We haven't learned if he's re-signed since then, but he hasn't been on ROH or AEW TV since we learned of it." Big Bill has been absent from AEW programming since February Big Bill last wrestled for an episode of ROH back on April 6. He and Bryan Keith defeated Nick Halen & Vin Parker in a very quick tag team match.…