Ange Postecoglou says he isn't concerning himself with what Rangers are doing in the transfer market and says next season everyone will see who is "really strong".
The Aussie issued a stern response to being quizzed on the shakers and movers across the city, with Michael Beale teasing new arrivals at Ibrox while five first-team stars have left the club this week including top billers Alfredo Morelos and Ryan Kent.
Meanwhile Postecoglou will be building his side for another Champions League charge after securing the Scottish Premiership crown and being one game away from a domestic treble.
Postecoglou insists he won't get bogged down on business outside of Celtic in the 'junk time' of the season and that when asked if he expects a tougher title challenge from Ibrox, he says the proof will be in the pudding on the pitch come the restart of the league.