كتب : وكالات
The Spain striker has been poised to leave the club this summer, with Premier League champions Chelsea chasing his services.
"My commitment and loyalty to the club and to the fans is the same as it was on my first day when I signed. I am looking forward to the challenge ahead," he told the club's website.
"This is the best club in the country so the targets and expectations are always high.
"Hopefully we can stay at our level. At Liverpool the aim is to fight for every title. It was difficult last season but we are sure we can improve this season. I am really happy to be back, really happy to stay with all my teammates."