Celtic manager Martin O'Neill has been talking to the media before his side's Premier Sports Cup tie at Dundee United on Saturday. Confirms Arne Engels is on the verge of joining West Ham and says he is "naturally disappointed" that the Belgian midfielder is leaving. Says it would have been difficult for Engels to turn such a move down and praised the way the 22-year-old handled himself last season after Celtic turned down a bid from Nottingham Forest.