"I love playing Liverpool," he said. "I'm always happy to play against them, especially at Anfield."
His three wins and a draw against Liverpool include victories at Anfield last season in the FA Cup and Carling Cup.
"We invariably score at Anfield so that is a good sign for the second leg," he said.
"My first club was Osasuna and Rafa was the coach back in 1996," recalled the Arsenal goalkeeper. "Although I started in the 'B' team he coached me quite a lot. It was not a lucky time for him. There was no indication then that he would be so successful because the team was nearly relegated and he got sacked."