The Gunners booked their place in the fourth round draw after Santi Cazorla drilled in a fine opening goal on 31 minutes, before Tomas Rosicky doubled the lead on the hour with a well-taken finish after robbing Danny Rose on the halfway line and sprinting clear.
"The game was played at a good pace and I think we controlled quite well both sides of it; the defensive and the offensive," he said.
"We always looked to have a good discipline and to be tight at the back.
"Every time, when our game is based on movement and quick, sharp passing, we looked dangerous."
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