The rampant Gunners won 8-0 in new manager Unai Emery’s first game in charge.
Arsenal fan Garrard was amazed by what he was watching - and says it can’t be anything but positive.
“They’re the best team I have ever faced in my career,” he told the club’s video service.
“You look at the two side they put out, they’re frightening. They were here to put on a show for their new manager.
“Killer, ruthless - they were ready to hit us with every blow they could.
“But it was such a worthwhile exercise, it will benefit us down the line,” Garrard added.
“As a proud Arsenal fan it was massive to be the first manager to shake Unai Emery’s hand in England.
“I was a little gutted about the scoreline but I have to look through that.”