"I will be 33 at the end of my contract in 2013 and I don't know if I will go any further," Gerrard told France Football.
"If I do retire, then I will know that from the start to the end of my career I only had one club. And I don't want to think about wearing any other shirt in the future.
"It was a difficult moment for me. However, now when I look back I am very happy that I chose to stay here. It has given me real pride."