West Ham United have signed Southampton midfielder James Ward-Prowse.

Ward-Prowse has penned a four-year deal, with Saints accepting a £30m offer.

"I'm buzzing to be here at West Ham United," he said.

"From the outside looking in, this is a club that has been on the rise for a number of years now and coming off the success in the Europa Conference League last year, you can feel there is real momentum around this club."

West Ham manager David Moyes said: "He's performed to a very high level in the Premier League over the last decade, constantly producing good numbers season after season.

"His leadership qualities are obviously another huge plus for us - he'll be a big voice for us, someone who drives the team on from the middle of the pitch."