Antonio Conte decided to exercise the option to end the defender’s season-long deal with the south coast side early.
Ake joined Bournemouth last June and has become a regular starter for Bournemouth’s defence, scoring three goals in 12 games he featured in.
The Chelsea boss had already mentioned he showed interest in the 21-year-old despite the Bournemouth manager’s comment which clearly stated that losing the young and talented defender would be a “big blow”.
“Ake has started the last eight games he has been eligible for but Chelsea have activated an option to recall him during the opening weeks of January, and the 21-year-old will return to Stamford Bridge immediately,” said the club.
“AFC Bournemouth would like to thank Nathan for his efforts over the past seven months and wish him well for the future.”