Javier Mascherano is tipping new Liverpool teammate Lucas Leiva for big things.

He told liverpoolfc.tv: "I played against him in Brazil when he was with Gremio and I was at Corinthians. He gave me a tough game, so I know he is a really good player. But when you arrive in another country you have new teammates and you have to learn a language. Maybe you have to play in a different way, so you need time."