#1 Ethan Ampadu

Just like Hudson-Odoi, yet another 17-year-old who has displayed unbelievable ability is Ethan Ampadu. In what can now only be considered a coup, the Blues acquired his services for a mere £2.5m (decided by tribunal) from League Two side Exeter.
His arrival was primarily for the youth team, at the time, but he quickly earned his way into the senior ranks. Ampadu made three appearances each in the FA Cup and Carabao Cup before making his Premier League debut away against Huddersfield.
Later, he also got his first senior cap for Wales during their friendly defeat by France last November. His composure, maturity and playing style all make it hard to believe he is yet to turn 18. Crucially, he offers versatility too - being able to play at centre-back but equally as a defensive-minded or holding midfielder.
Whether he is at Chelsea or not, Ethan is a player destined to make a huge name for himself in the years to come. If Sarri does decide to wisely integrate the Wales international - alongside Hudson-Odoi - as first-team players this term, he has two quality options who could prove very useful throughout the course of the campaign, not least with UEFA Europa League football on the horizon.