Callum Hudson-Odoi will only sign a new contract with Chelsea if he is guaranteed playing time.
The 18-year-old, who will be sidelined until next season with an achilles injury, has begun talks over a new five year deal with the Blues.
The Sun says Hudson-Odoi has told the club that he wants to stay, but only on the condition that his playing time is assured.
The England international was used sporadically by Maurizio Sarri last season.
A Blues source - via The Sun - said: "It's never been about money for Callum, it's far more about his development. Chelsea is the team he supported as a boy and he wants to play for them.
"But if he can't play enough, he won't improve — and that doesn't suit him or the club."