That does throw a spanner in his formation cause Fenton was his engine man that was going to gallop up and down that right flank all day. They don't have anyone else that will do that so would not be surprised to see them revert to a back 4 with Doyle and Muscat on the sides.
Which would bring into question why we are changing formation to something that is quite reliant on one injury prone player.
In saying that, the A-League is tough in that every injury to a starting player hits very, very hard. Tough to plan for that.