I wanted to pose this question to my fellow Lions fans for two reasons. 1) Curiosity and 2) to get a better understanding of the NFL's franchise tag.

Lions fans have seen "star" players leave the team in the past in search of greener pastures and a chance to revive their careers. Is this something that you see Calvin Johnson doing when his contract expires? I, for one, think Detroit should do everything in their power to keep him around as long as possible -- which leads me to my second question: Does anyone know the rules/requirements of the NFL's Franchise Tag. I had a conversation with a friend about CJ leaving the team when his contract is up, and he told me not to worry because the Lions would Franchise him. For whatever reason, I was under the impression that the Franchise tag could only be used once on a player in their final contract year to extend his playing time and give the team another chance to extend a deal to keep that player around. I'm now starting to realize that I don't think I have any clue as to what the Franchise Tag means. I'm sure there are plenty of you out there with more knowledge than me. So if you wouldn't mind filling me in, and maybe others who would like to know as well, that'd be great. Thanks guys.