Mascherano has long been linked with a move to Italian giants Inter Milan.
“We know the situation regarding Javier and of course we all hope he stays because he’s such a good player and important to the team,” said Lucas in the Daily Mirror.
“We’ll have to wait and see, but if he goes then I’m ready to play and to impress and do whatever job the manager needs from me.
“I’m not the same player as Javier, we have different styles, but I know I am able play the role Javier does because last season I played a few games when he was at right-back.
“I’ve no problem with doing that job, I know I can do it if that’s what the manager wants. I think I did well last season, but I think in this one I can do even better wherever I play.”