Chelsea defender Cesar Azpilicueta says the deal for Borussia Dortmund winger Christian Pulisic is a warning for the players.

Azpilicueta has welcomed the USA international's move to Stamford Bridge, but feels it also sends a message to the current group.

He told the London Evening Standard: "Of course. Chelsea is a top club and the competition is very high.

"Every moment we need to get results, we need to perform. That has been the case for a long time at Chelsea and will be the same now.

"Obviously I am very happy that Chelsea have signed Pulisic. He is a talented young player and will come in the summer.

"For the next six months he will be with Borussia, but I'm happy that we are getting young players. Hopefully he can be very good for us."