I've thought about bringing this up multiple times this year, but decided against it because it's hard to know what kids will do. Yes, they all want to play, but some kids just like being at Furman as well.
I have no inside info, but I did mention to Jackal that I thought it was surprising that we didn't have any QB offers (that we know of) out because there is definitely a scenario where we only have 1 scholarship QB when the portal opens. I won't speculate what any of the 3 QBs will do, but it wouldn't surprise me at all if one left. And just to be clear, this is a problem for almost every school. It's hard to keep more than 3 quality scholarship QBs on a roster for more than a season now.
Hopefully they all stay, but I would be surprised if it happened. Unfortunately, a lot of schools at this level are dealing with the same thing to some degree.