I have no way of knowing for sure, but I think SB's return is about the fame rather than the fortune. None of the soaps left on the air will be willing or able to pay him what he was making at his height, so going back to GH is about trying to recapture the magic of the old days and basking in the glow of past glories. I'm sure none of his agents or managers have brought up the old cliché that you can't go home again, because they will need him to mine whatever good will he has left with the executives at ABC in order to keep working. Much has been said about the circumstances surrounding his departure from GH, and if it were any other business I'd believe returning to GH was not even an option for him....but show business is a strange animal indeed. Frank Valentini (and to a lesser extent, then-Head Writer Ron Carlivati) humiliated SB by rejecting SB's expensive contract demands and unceremoniously dumping Jason in the harbor. FV and RC moved on with the show as if Jason were some 13-week recurring character, and rather than a huge backlash from the fans, the show's ratings actually went up afterward. FV is still in charge of the show, so we have to believe that SB is returning on FV's terms...which would be in line with most other employees of the show. The main draw, therefore, would be the chance to live in the past glories of the Sonny/Jason/Carly period where they dominated air time and (supposedly) popularity polls. I think he will ultimately be disappointed, not only because you can't go home again, but because this is a very different climate than the mid-2000s when ratings were higher and soap fans were much more "involved" with the shows. Being a popular soap character in 2017 means far less than being a popular soap character in 2007 (or even 2012), because soaps as a genre are far less visible. There is also much more vocal factions of fans who dread the return of a GH dominated by the mobster, his moll, and his hitman...so rather than a hero's welcome, his return will likely be an uphill climb if they seek to recreate the past.