Granger is in his primes. Next year Indiana will have 40 mln on cap, a former all star in his prime and a bunch of good young pieces. Having a plyer like Granger could mean sometihng on attracking others FA.
More, at february deadline, they can send some piecies (Murphy, Dunleavy) to teams in playoff chase for picks or youngs.
I think they'll move Granger only for a couple of good young pieces, not just Collison.
It would take a package of something like Derrick Favors and Terrence Williams to get Granger off the Pacers hands. I think you guys severely underestimate how good Granger is, he just plays on a horrible team. His statistical output the last two seasons are better than anything Reggie Miller ever put up.