The 25-year-old hopes his defensive abilities will allow the likes of Joe Allen and Steven Gerrard to express themselves further forward as Brendan Rodgers' side attempt to extend a run which has included a single defeat in 10 league matches.
"I didn't have that much time to work with Joe on the pitch because he came towards the end of the pre-season and afterwards I was injured," Lucas explained to Liverpoolfc.com.
"But we could see Joe getting forward to join the attack and create chances - that's what he used to do at Swansea so he feels very comfortable there knowing that we will always be behind the ball and trying to cover.
"I hope I can help in this way to give freedom for him, Stevie, [Jordan] Henderson, [Nuri] Sahin and Jonjo [Shelvey]. That's my job and I'm delighted to be able to help again."