Meanwhile , Arsenal 's north London rivals Tottenham have suffered a setback with a serious injury to Croatia playmaker Luka Modric . Arsenal manager Arsene Wenger is to receive an apology from referee 's chief . Wenger sent off in the closing seconds of the 2-1 defeat to Manchester United . The FA has also announced that it will investigate whether there was a breach of its rules on crowd behaviour at matches involving English clubs and foreign teams. Tottenham 's Croatia midfielder Luka Modric suffers a broken right leg .
Arsenal manager Arsene Wenger is to receive an apology from referee 's chief . Wenger sent off in the closing seconds of the 2-1 defeat to Manchester United . The FA has also announced that it will investigate whether there was a breach of its rules on crowd behaviour at matches involving English clubs and foreign teams. Tottenham 's Croatia midfielder Luka Modric suffers a broken right leg .