Chelsea defender Gary Cahill is convinced his game will go up a level working with manager Jose Mourinho.
Mourinho has started the 27-year-old in all four of the west Londoners' games so far this season.
Cahill said: "As a manager, he has certainly worked with the best and seen the best.
"I am sure he can improve the team and also individually improve players because he has worked with the best players in the world.
"Obviously, he likes you to work hard. Training is intense and he there is a certain expectation level he has got and that rubs off on the players.
"For him to have picked me at the start of the season has been a real positive and I hope I can take all of that into England."
