At the River Plate and Boca Juniors matches , the atmosphere can swell to boiling point . United beat City 4 - 3 in a classic Manchester derby on Sunday . The match between Rangers and Celtic in Glasgow is bitterly contested . When Al Ahly beat Rangers , foreign referees have to be brought in . Despite distance between River Plate and Boca 's fans , tension is high .
United beat City 4 - 3 in a classic Manchester derby on Sunday . The match between Rangers and Celtic in Glasgow is bitterly contested . When Al Ahly beat Rangers , foreign referees have to be brought in . Despite distance between River Plate and Boca 's fans , tension is high .