McManus has started every game (18 to date) since he arrived at Stark's, so it's unlikely he'll be dropped next week. Equally annoying is that Vaughan started all the early games including wins against Ayr, St Mirren and Dunfermline and the draw at Tannadice but hasn't had a start since the 3-2 defeat away to Forfar in early September.
The midfield against United will be Matthews, Callachan, Thompson and Barr and the front 2 will be Stewart and McManus. We won't score because we won't have a single shot at goal. Put your money on it.