The Spaniard feels the position in behind the striker is the one that can help him become prolific again and believes that there are three players in Roberto Di Matteo's squad capable of providing him with scoring opportunities.
"I like players who can find the space behind the defenders who can find a small gap to pass the ball and put me in front of the goalkeeper," he told the Chelsea Magazine.
"Juan Mata is very easy to play alongside because he has these qualities, where he finds the space behind the defenders.
"We have scored a lot of goals thanks to these kinds of passes from him. We have him, plus Eden Hazard plays there and Oscar as well. For me, it's the most important position for the team.
"The number 10 or second striker is the one who is going to make the difference, the one who is going to finish the game or change it by giving an assist or scoring a goal.
"All the great teams have a quality number 10 and we have two or three this season, so we have to exploit that."