Arsenal host historic rivals, and FA Cup holders, Manchester United in the pick of the third-round ties at the Emirates Stadium today. The two teams have not been in the best form recently, but can put a smile back on the faces of their fans by progressing to the fourth round.

Watch highlights as Leyton Orient beat Derby County 6-5 on penalties and progress to face Manchester City in Round four of the FA Cup.

Zech Obiero buries the penalty kick to send Leyton Orient onto the fourth round of the FA Cup.

Leyton Orient booked a home clash with Manchester City in the FA Cup fourth round by beating Derby 6-5 on penalties after the teams had drawn 1-1 after extra-time at Brisbane Road. Both teams converted their first five penalties before substitute Zech Obiero became the hero for the hosts when he beat Jacob Widell Zetterstrom from the spot to settle the third round tie,