The defender has completed a permanent move the Vitality Stadium after impressing on during a loan spell last season
Bournemouth have signed Nathan Ake from Chelsea for a fee of around £20 million.
The defender spent the first half of last season on loan at the Cherries, prior to being recalled by Antonio Conte as he struggled to strengthen his squad in the January transfer window.
However, Ake made only five appearances for the Blues following his return and has now sealed a permanent move to the south coast.
Howe played a huge part in securing Ake amid competition and the Netherlands international made it clear to Chelsea that he wanted to leave over a lack of first team opportunities.
After Asmir Begovic, Ake will become the second Chelsea player to move to Bournemouth for a combined total of £32 million.
Chelsea will look to sign a replacement at centre-back with Leonardo Bonucci and Virgil van Dijk outlined as top targets.