William Hill Scottish Cup quarter-final ended in a 1-1 draw at Tannadice . Referee sent off Celtic defender Nadir Ciftci and Dundee United 's Paul Paton ( in a case of mistaken identity ) and Paul Dixon . Ronny Deila has accused Aidan Connolly from diving to win a penalty . Virgil van Dyke opened the scoring for the hosts from the penalty spot . Leigh Griffiths missed a penalty before equalising for the Hoops .
William Hill Scottish Cup quarter-final ended in a 1-1 draw at Tannadice . Referee sent off Celtic defender Virgil van Dyke and Dundee United 's Paul Paton ( in a case of mistaken identity ) and Paul Dixon . Ronny Deila has accused Aidan Connolly from diving to win a penalty . Nadir Ciftci opened the scoring for the hosts from the penalty spot . Leigh Griffiths missed a penalty before equalising for the Hoops .