I agree, AC is very important for the team. In his recent interview with Colts.com, he mentioned two excellent things:
1. He is a Colt through and through.
"I don't think there was ever a question about coming back to the Colts. I love the Colts and I love the organization. I think they've been nothing but good to me, and I trust the head coach and I trust the general manager and I trust the owner. So that was never a question."
2. He has a lot more in the tank and feels his best football is ahead of him.
"What ultimately made me decide to come back and play was just the fact that after starting some offseason training and kind of doing some things that I had done last year at this time, realizing how far ahead of where I was last year at this time I am right now, and just really realizing how much more I have in the tank and how I think that my best football is still ahead of me. So it didn't make sense for me to hang it up at this time."
I think he'll be around for another 2-year contract after this one. Hope so!!