Ange Postecoglou previously had a clash with Rangers over former player Matt McKay.The Parkhead arrival will be tasked with dethroning the Scottish champions after being announced to take charge of the Hoops on a 12-month rolling contract.However he previously had a run-in with the Ibrox club in 2012 over Brisbane Roar favourite McKay when he was approached to take the Australia cap back to the A-League after a failed stint in Glasgow.But Ally McCoist and Rangers' asking price was set too high for Postecoglou's liking.Celtic's new man said at the time: "Rangers approached us about taking back McKay.
But we are not interested in buying him back or taking him on loan.Get all the latest Celtic news sent straight to your Inbox every day by.
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