Bournemouth have acquired Chelsea defender Nathan Ake, for a fee believed to be worth £20 million.
Ake spent the first half of last season at Bournemouth, before returning to Chelsea in January.
The Belgium international only made five starts and has returned to Bournemouth on a permanent deal.
“I had a great time here last season so I’m really happy to be back,” said Ake.
“It’s an exciting challenge. Chelsea is a great club and I learned so much there but this is a new step and the right place for me to develop even more.
“The fans haven’t seen the best of me yet. I always set the bar high so I know there is a lot of things I still have to work on.
“With the help of the manager here I know I can keep improving and become a better player.”