Southampton have signed signed Croatia centre-back Duje Caleta-Car for an undisclosed fee from Marseille.
The 25-year-old arrives after Jan Bednarek's move to Aston Villa.
Saints have made four signings on deadline day.
Caleta-Car said: "It was a crazy day. I'm very excited.
"I know the way they play, they have a lot of young players, so I think I can come good in the group and be with them every day, to progress with them together."