From managers at club and national team level to club colleagues and Premier League opponents, there has been no shortage of praise directed the way of our teenage forward over the past two years. Here, we look at some of the best comments about our number 20...

Cesar Azpilicueta: ‘He can go really far. If he keeps his head, he will be very good. The way he is working shows he will be very important for the team.’

England captain Harry Kane: 'As an England team, we want that flair and flexibility. It’s a great sign in this country that we’re producing these type of players. I have no doubt Callum has the ability to play at the highest level. We’re excited to have him. Everyone is fighting for places and he sees it as an opportunity for himself.'

Frank Lampard: ‘He can show, right here at Chelsea, the club where he came through the Academy, that he is going to be a world-class player. I truly believe that. I see him being a huge player for us.’

Cesc Fabregas: ‘He is a boy who is full of confidence. I remember his first training session and his finishing was superb. I thought "I have never seen this kid before but actually he has something about him." It was very early but you could see that he had a lot of potential.’

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England boss Gareth Southgate: ‘With young players, it’s up to them. You can see his talent. His application with us has been excellent but, like any player, you have to work hard to improve.’

Alvaro Morata: ‘I’ve never seen a player like him.’

Liverpool's Andy Robertson: ‘I’m sure he has a fantastic career ahead of him. It’s better not to put too much pressure on him because he can be a great player. I was just happy to see the back of him when he was taken off.

Olivier Giroud: ‘He’s got huge potential. I’m sure he will become a top player.’

Joe Cole: ‘I actually trained with Callum when I was coming back from America. I was lucky enough to train with the Chelsea Under-18s so I saw him first hand. He actually stood me up a couple of times! You can’t catch him – with that pace and power, there’s nothing you can do. He’s a great player and he can get even better.’