#5 Andreas Christensen
Andreas Christensen joined Chelsea at the age of 15 in 2012 and made his professional debut for them in October 2014. He was loaned to Bundesliga club Borussia Mönchengladbach from 2015 to 2017, returned to Chelsea in 2017 and has cemented his place in the first-team since then.
At the age of just 21 years, he is a regular for his national team since 2015, having made 17 appearances for Denmark.
In his first full season at Chelsea, which saw him make his first appearance coming off the bench following the sending-off of Gary Cahill in Chelsea's 3–2 opening day home defeat against Burnley, the Dane has gone on to play 23 matches and helped his team concede only 14 goals; keeping 8 clean sheets in the process.
He has been rewarded with a new contract that keeps him at the club till 2022 and with David Luiz injured and manager Conte preferring a 3-man-defense, Christensen has flourished in a partnership with Gary Cahill/Antonio Rudiger and Azpilicueta, emerging as a bright spot in a disappointing season for Chelsea.
With great man-marking skills, physical strength and the ability to intercept attacks, Christensen has started developing into a quality centre-back. He has also established himself as a regular starter at right-back for Denmark.
In November, he played a significant part in the equalising goal as his country beat Republic of Ireland 5-1 in Dublin to secure qualification for this World-Cup and is definitely a young prospect to watch out for during this World-Cup.