Gerrard said: "I am on the verge of signing it now, there are just a couple of minor details, so I am hoping I can sign it before I go off on my holidays.
"This is a big contract for me and it's likely to be my final one. It takes me to 33 but I feel I'm in the prime of my footballing career at the moment.
"I feel confident and strong and I feel really good when I'm out on the pitch. The aim for me now is to stay fit for the next four years and try to play as many games as I can and win as many trophies as I can.
"I'm getting greedy when it comes to winning trophies because I know I have to win as many as I can before it's too late."