Arsenal ##pool Manchester 2 - 1 in their FA Cup quarter - final clash on Monday . Danny Welbeck came back to haunt his former side with the winner for mark Wenger 's goal . Louis van Gaal 's substitutes proved to be too defensive on the pitch . Whereas Arsene Wenger gambled with his tactics and deserved the rewards . they will face either Bradford or Reading in the semi finals .
Arsenal beat Manchester 2-1 in their FA Cup quarter-final clash on Monday . Danny Welbeck came back to haunt his former side with the winner for Arsene Wenger 's men . Louis van Gaal's substitutes proved to be too defensive on the night . Whereas Arsene Wenger gambled with his tactics and reaped the rewards . Arsenal will play either Bradford or Reading in the semi finals .