Martin O’Neill gets the mentality shift he wanted as Celtic win at Dundee

Celtic manager Martin O’Neill got the mentality shift he had demanded as the champions ended their Dundee hoodoo. An 82nd-minute goal from Kelechi Iheanacho earned Celtic a 2-1 win at Dens Park – two weeks after a 2-0 defeat along the road at Tannadice. Celtic have lost three times in the City of Di