I'm going to say Sheila, but I haven't been fervently watching this season and I'm mostly basing it on Sheila getting the best edited/longest/final goodbye video/apology to Natalie. Also she has a standout personality, the story of being a likely early boot & she's the only one who isn't still a kid for all intents and purposes. Otherwise they'd probably want Adam, who also stands out (I suppose that isn't much of an accomplishment when the other two houseguests are Sharon & Ryan) and hasn't been voted out previously.