Merson thinks the Blues will not end up competing for the title but will finish in the top four along with Spurs.
He told the Daily Star: “He needs to put a shift in for Chelsea against Tottenham because he is sometimes their biggest problem.
“I was at Stamford Bridge for the Everton game and 10 minutes in I said it would finish 0-0. It was too slow – and mostly because of Luiz.
“He takes a touch, plays it back to the keeper, plays it square, plays it square again. Then he had the audacity to tell the fans to liven up!