Celtic and revealed it was Covid related. Madden was the appointed match official for the Sunday night clash but a late change saw him removed from the game.The FIFA official was replaced by fourth official David Munro, with Billy Baxter stepping in to take over in the technical area.Madden had just returned from taking charge of the Eternal Enemies Derby between Olympiacos and Panathanaikos in Piraeus last weekend.And it transpires that one of the linesmen that travelled with him to Greece, David Roome, returned a positive Covid-19 test on Wednesday - with Madden considered a close contact despite his own pair of negative tests in the following days.Another assistant involved in the trip to Athens, Graeme Stewart actually ran the line at.
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