Marvin turns 32 this month. The hope among Colts fans is that Marv's deal gets done (hopefully cap friendly as he wants to remain a Colt - won't find a better fit in an offense than he has in Indy), and the franchise tag is used for Edge. Of course that depends on Edge's production this year, as Polian is not queasy about letting go of a big name (ala Faulk), and drafting to fill the position.
Edge is one of my favorite Colts, so I hope it works out that he remains in Indy. Was at training camp yesterday, and bought a James authentic, even though he may be leaving, out of respect for his contributions to our team. The jerseys were on sale, since our color has slightly changed for this year, so I couldn't resist.
Good luck with your season, I truly feel bad for your team as you've had the worst luck this offseason. And please beat the Titans for us in week 1!