I've heard the same thing about Moats as well. Byrd reportedly signed with the Saints yesterday, though.
I don't think Mack is going anywhere. The Browns have the right to match any offer sheet he signs within 5 days of him signing it. It sure seems like they will unless it is just ridiculous. Personally, I think anything over $10 million for a center is ridiculous, and certainly is for Mack. He's good, but if he was as good as some say he is, our running game would create holes on, at least, a somewhat consistent basis and our QB's would have more than 2 seconds to get rid of the ball. Then again, our guards just suck and our right tackle isn't much better, so it's possible that he and Thomas are both that good, but can't do it alone.