Rangers significant problems on Sunday and wonders if Celtic will look to use a similar strategy.The Australia international positioned himself expertly to exploit space left by Borna Barisic and Nathan Patterson's forward runs as he proved a constant thorn in the Ibrox rearguard's side.The Hoops adjusted from their regular diamond formation to a 4-3-3 shape against Livingston on Saturday as they trampled over the top of the West Lothian outfit in a 6-0 victory.