Bournemouth are set to sign Ukraine international centre-back Illya Zabarnyi from Dynamo Kyiv.
The 20-year-old is due to fly in on Tuesday for a medical before completing a move, reportedly worth around £24m.
Zabarnyi has played 25 times this season, including five appearances in the Europa League.
The Cherries have already signed forward Antoine Semenyo for £10m, winger Dango Ouattara for around £20m and goalkeeper Darren Randolph.
Uruguay full-back Matias Vina has also joined on loan from Roma.