By Greg Stobart in Rio de Janeiro
Germany forward Andre Schurrle will give his team-mates secrets on how to face David Luiz and his other friends in the Brazil team ahead of the World Cup semi-final in Belo Horizonte on Tuesday.
Schurrle plays with Oscar, Willian and Ramires at Chelsea, while Luiz has just left the Blues to sign for Paris Saint-Germain and scored a stunning free-kick in Brazil's 2-1 quarter-final victory over Colombia on Friday.
Schurrle admits he has not been in contact with the Brazilian players during the World Cup because they are now ‘rivals’ and will give his Germany team-mates tips as they look to book a place in the final.
"Of course, if somebody asks me how to play against Oscar or David Luiz, I’m here to help," Schurrle said.
"We haven’t been in touch during the tournament. We are rivals here so there have not been any text messages.
"For me it will be cool to play against my Brazilian friends from Chelsea."
Germany booked their semi-final spot with a 1-0 win over France at the Maracana on Friday thanks to a first-half header from defender Mats Hummels.
Joachim Low’s side have faced some criticism for the level of their performances during the World Cup but Schurrle believes Germany have proved their winning mentality in the tournament.
He added: "We have quality, it’s not just luck or the DNA of the players. We have had some tight matches, but we have deserved to win every game we have won. That was the case against France as well.
"The best thing about the team is that we win. We fight and give everything we have. We have good players and we win in the end, that’s the most important thing."