The French youngster had attracted interest from other clubs but his decided to sign his first professional deal at Stamford Bridge
Teenage goalkeeper Nicolas Tie has signed a professional contract with Chelsea.
The 17-year-old joined the Premier League club last summer from amateur French side Poitiers after being linked to them for years and went on to feature for the Blues' Under 18 team.
After a year in London, the Lille native has now committed to his first senior contract, which sees him tied to the Stamford Bridge side until 2021.
A tall and athletic goalkeeper, Tie had attracted interest from his homeland, most notably Rennes.