Normally I would bother making a post on a AAA with no shot of making the ML team opting out. However, this might send ripple effects throughout the system. First of all as Chad Jennings notes, Trenton's starter for Saturday is now To Be Announced instead of Ivan Nova. I'm not a big fan of Nova but he's been nothing short of dominant lately and could be in line for a promotion to take Fossum's spot. Personally, I think it would make more sense for Zack McAllister to get the call.
Regardless, somebody is going to get a call up. Another possible effect, the obvious corresponding move to fill the hole in Trenton's rotation would be to promote Jeremy Bleich which is something I'd really love to see. This all just speculation though until something actually happens. They could just sign a random free agent instead.