I think "Saul" would have convinced him to take the deal...if he was his actual client.
He would go into one his diatribes:
"Ok, here's the layout, kid. You have a chance of going free like I have a chance of getting blown by Jessica Simpson."
This is exactly why the writing is so brilliant on this show.
The end result (getting the guy to take the deal) would've been the same....but the motivation would be different. The sole reason "Saul" gave a fukk about Bobby is he seen how upset Kim was....Saul as we know him from "BB" wouldn't care about someone that wasn't his client.
And hell....realistically someone like Bobby and Saul would never cross paths. Keep in mind Kim has been doing pro bono work....Saul would never do some shyt like that. You don't got the money, he ain't fukking with you.
But even Saul on "BB" ain't completely rid of Jimmy. Him telling Walt to go take care of his family instead of trying to get revenge was probably the most Jimmy thing he did on that show.
Fred.