One fallacy that keeps getting repeated is that AA guys like Vogelbach, if they're traded, won't be options for call up for their big league teams. You have to remember that the Cubs are one of about 10 teams in baseball that use AAA as a final development stage. The other 20 call up their players directly from AA with AAA serving as organizational depth and a landing spot for guys who are sent down to get more work. If Vogelbach were to go in a trade, particularly to a team that needs DH help now, it wouldn't be a stretch to see him in MLB this year. That's not to say he's the key player in a trade package as he likely won't be, but he could be an immediate option for a AL club. That makes for more of a sweeter than you would think.
The other thing that gets repeated a lot around her is that Carl Edwards Jr. (Formerly CJ) is likely trade bait. I seriously doubt it unless two pitchers come back in the trade he was involved in. By almost all accounts the Cubs really, really like this kid and think he has TOR potential, other scouts and observers question that which says to me that the Cubs are unlikely to include him in a deal because the his value to them is higher than his trade value. That doesn't seem like this FO's MO but of course you never say never. He didn't look good in his first AAA outing but if he pitches well going forward there's no doubt he'll be up to help that bullpen and some point this year and maybe get a shot at the rotation next year. He's part of their plans for now but of course plans can change.