Apparently it is 6/50 guaranteed, and can max out at $88m over 8 years if both team options are picked up.
Good deal for the White Sox, but good for Robert too, I think. He'll start the season on the team instead of held down to manipulate an extra year, so he really only gives up one free agent year. Would he be able to get more than $88M with 3 min years, 4 arb years, and then his first of free agency? Maybe, but not a guarantee, and that's assuming he actually becomes a star and remains one over the long haul. He'll be a free agent at age 29.