Havertz produced arguably his best performance in a Chelsea shirt to date as we raced to a 4-1 win at Selhurst Park, with the forward getting a goal and an assist in the same Premier League game for the first time.

While Tuchel insists there is still more to come from his fellow German, as well as wanting to see more consistency from him, he was pleased to see him in form and revealed what he told the 21-year-old before the game to get the best out of our number 29.

‘I cannot tell you the level that he will reach or how fast he can do it,’ said Tuchel. ‘I can just repeat, when he stepped out of his comfort zone when he changed club from Leverkusen to Chelsea he absolutely wanted to challenge himself and now it’s on him to show the quality.

‘He had showed it already against very strong opponents in Everton and Liverpool. He had a tough match against Porto and the speech was very easy: “go and show that you can do better and fight for your place, you get a second chance”.

‘He knew that he had to be more ruthless in his finishing because he has that extra quality and I want him to show it. He is about controlling the ball, keeping the ball in difficult situations, having little runs in high positions to finish and assist. He needs to show up and show up and show up, this is life as an offensive player at Chelsea.’

He also insisted that Havertz should be judged on his own merits, not compared to players with very different talents and personalities, as it is important not to mistake his relaxed approach for a lack of passion or commitment on the pitch.

‘He’s not an emotional guy that needs to be fighting with the opponent all the time to be at his best,’ explained our head coach. ‘He’s not a Diego Costa, and I will not demand that he becomes that kind of guy.

‘You cannot confuse his body language with thinking that he does not give everything. He’s a very proud character and he’s very aware of his quality and he’s ready to show that. What we can demand from him is quality, because he has that, and this is the way we are hoping he will help the team and will become an important player if he can show this regularly.’

However, it is not just Havertz that Tuchel is pushing to not only produce his best, but to do so on a regular basis, making it clear to the players what they need to do to get into the team and stay there, given the stiff competition for places at Chelsea.

‘The guys are in a position that they need to deliver, it’s as easy as that. The offensive guys and the defensive guys, they know that if they deliver they play for Chelsea. It’s the moment to show your quality and to deliver.

‘We had a very good day against Crystal Palace. This was a big step for us to get the win, but on Tuesday the challenge starts again with Porto. Until then the guys are all keen to show that they are ready to be rewarded with some minutes.’