The Premier League champions are close to sealing the transfer of the 21-year-old ex-Barcelona academy player after agreeing a fee with Anderlecht.
Thomas Tuchel has given his clearest indication yet that he is open to bringing Pierre-Emerick Aubameyang to Chelsea as they weigh up a move for the Barcelona striker.
The defender finally made his Arsenal bow in the opening game of the season against Crystal Palace.
Tottenham are expected to make further additions before the transfer window closes, but Antonio Conte says they will not be reckless.