I don't see both Drury and Panik on the roster together. Seems like they'd have the same role except Panik can at least act like a competent big league hitter every now and then. I'm only going by the article that Panik is in the lead to make the team. If that's the case, then I would think Drury heads to AAA. I'm not a fan of Tellez either, especially as a DH, but if he's making the team, then I can't imagine he'd be a bench player since he provides no defensive value at all. He's either the starting DH or in Buffalo, imo.
If they like Fisher as much as they seem to, then they could leave DH open and have a five man crew of Fisher, Panik, Drury, Alford, and McGuire (one of them would play the field/DH, most likely Fisher, while the other four on the bench). But again that puts Drury and Panik both on the bench and that seems like a pointless situation to be in, especially since Drury has been awful lately.