Neil Lennon reckons Celtic will have given Gio van Bronckhorst a migraine that will take a couple of days in a dark room to recover from.
And the former Parkhead boss has revealed he is "itching" to get back into management with the Sunderland job in his crosshairs.
Lennon watched on as a fan on Wednesday night as his old team blew rivals Rangers away to reclaim top spot in the Premiership.