Chelsea defender Andreas Christensen admits joining the Blues as a teen meant a great leap in intensity.

Indeed, the Dane has recalled when he and Nathan Ake, now with Manchester City, were told to play with microphones.

"Ats 16 years old I arrived at Chelsea. I could quickly feel an increased pressure, it was more serious," said AC.

"I remember Nathan Ake and I were asked to play with microphones because the coach did not think we communicated enough as centre-backs.

"There were trainings where the coach shouted at us that he could not hear anything. He shouted at us if the microphones might be broken."