Excellent news, really.
Three things to consider.
Branch likes the system, the coaching staff and his teammates, it says a lot about the team. Glad that we won't need to worry about another hole to fill in FA.
As much as I like Carrington and I thought this was going to be a great year for him, he has zero leverage going into FA, as theBandit27 said, his best bet is to sign a one year deal and go from there.
We are solidifying, keeping or building the team from the inside out, hopefully the OL is next in line for some improvements.