Alonso left Anfield to join Spanish giants Real Madrid in the summer.
Brazilian ace Lucas Leiva has been forced to step into midfield alongside Javier Mascherano this season.
“The midfield of Liverpool put a lot of pressure on you because Alonso and Mascherano were fantastic players,” said Ancelotti.
“Lucas is a young player and he has to get experience. I think he will be a very good midfielder, but without Alonso, they have lost something.”
