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.
But, while Chelsea have sealed the long-term future of one goalkeeper, that of another looks unclear.
Courtois, who is contracted at Stamford Bridge until 2019, has previously said his ‘heart’ is in the Spanish capital as his family remains based there following his multi-year loan spell with Atletico Madrid.
And Courtois has re-iterated the importance of being close to his children, though he has no problems with his life in London.
"I love living in London. Madrid and London are great," Courtois said, via Sport.
"The only thing is that my children live in Madrid. I would like them to be close.
"That doesn't mean I'm going to come back, but for me they are very important and I'm going to do something to see them more."
Chelsea signed Courtois from Genk in 2011, but sent the goalkeeper out on loan to Atletico for three seasons.
"I'm not going to talk about that now. I just said that I'll see everything after the World Cup," Courtois said.
"The most important thing is my children and I'll decide what's best for me in everything."