I don't like Roberts as a baseball player under any circumstances ... even if he agreed to play for free ... and I CERTAINLY WOULD NOT pay him anywhere near the amount of money he's looking for. For me ... I'd let him go to free agency.
On the remainder of the list ... at this time ... it seems they absolutely have to keep Fuld, Joyce, Lobaton, McGee, Niemann and Ramos.
Beyond that, I believe Brignac ... and Roberts ... can be let go because neither has shown any recent ability to hit consistently ... plus ... Rodriguez is a f-a-r better natural second baseman than Roberts in all respects ... so there's no real point in keeping Roberts, either.
And, to me, that leaves a question as regards Johnson and Torres. Johnson has shown he can hit .270 ... he's big, athletic, strong, very quick ... and a suitable utility infielder and a potential switchhitter for the DH-by-committe concept that Maddon inferred. (?) And, as far as Torres goes, with the loss of Shields, Davis, Badenhop, and maybe Howell and Farnsworth ... maybe the immediate idea would be to keep all remaining pitchers at whatever the cost. (?)
Anyway ... Friedman is being paid the big bucks to make those decisions. For me, if the price was right and I had the room on the 40-man roster, I'd keep all of them around except Roberts.