The Spaniard struggled with a chest infection in the opening weeks of the season.
“Since coming back I have been feeling good,” he told the Gunners’ Official Matchday Programme.
“I didn’t feel so well at the start of the season, and I had some bad things around me. As a result I didn’t start the season so well.
“But I feel well now back on the pitch and I’m feeling 100 per cent in my mind and body. I have sorted everything out in my body and my life, and I’m ready to help my team-mates.
“It was very hard. Sometimes during your career you don’t feel at your best. But with good training, good help, and being professional I was sure I would come back.
“People around me, my wife, everyone was very supportive. Everybody has bad moments, and that was a bad period for me, but it’s in the past now.”
