Roberto Di Matteo has warned Barcelona that Chelsea will not be bullied into selling David Luiz.
Barcelona are reportedly preparing a £30 million bid for the Brazil international, while Manchester City have denied rumours they are interested in the defender.
While Premier League rivals Arsenal saw Alex Song depart for Camp Nou this week, Di Matteo insists they will not be selling Luiz at any price.
"Luiz is part of our future. It's normal that he'll get interest because he's a Brazilian international centre back," he said. "There have been no approaches for Luiz and he's not for sale at any price. It doesn't concern me, the player will be here for the long term.
"I believe we can withstand Barcelona. Personally we don't feel any pressure from them. This club has been very successful in the past. I don't see why any players would want to leave us for anywhere else.
"We always compete for trophies. We're an ambitious club with an ambitious owner. We have great facilities. We have a great group of players who over the years have won a lot and still have the hunger to win more."