"It is the biggest club I have ever played for," Sturridge told Liverpool's official website.
"In the Premier League, there is no bigger club than Liverpool."
"I thank the boss for giving me an opportunity to play for a club like this and I thank God for making it possible," added Sturridge.
"For the manager to pay money for me and to have faith in me and show everybody around the world that he is prepared to take a chance on me, I don't think I'll ever be able to repay him for that.
"As a young player, when you play for big clubs you can sometimes get caught up in it and you never get another opportunity to play for another big club.
"So I'm grateful the manager has given me this chance and that he believes in me. I'm just glad to be here."