When the Packers 2005 1st round pick came up I wanted OG Logan Mankins... but I'm glad they went with Rodgers. (and I thought QB Smith and QB Rodgers would bust I'm glad I was wrong about Rodgers.)
But rumors have been that Mankins hasn't been happy with the Patriots for years... some rumors have been that he hasn't been happy with his coaches.
I like Colledge and I think he has been one of the better OG in the NFL last two years (though he had a bad first 8 games last year but the other 24 in the last two years he's done a good job.)
I doubt their would be a deal both sides could agree to but if we're going to try to trade then maybe Colledge, Bigby, Jolly, Bush, Ford or Clark (not both) and Barbre or Giacomini (not both)
But if they were going to trade him I'm sure they could get a high draft pick and maybe better players... probably couldn't trade Jolly right now....