James Ward-Prowse admits it was difficult to leave Southampton for West Ham United.
The former Saints captain joined West Ham in a 30m deal this week.
Ward-Prowse told whufc.com: I'm feeling a lot of emotions. To leave Southampton to go on a new adventure with West Ham United, obviously there is a lot of emotion with that. But I'm full of a lot of excitement and positivity about what's to come.
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 UEFA Europa Conference League last year, you can feel there is a real momentum around this Club. It's great to be a part of it and I can't wait to play my role in the games to come.
It's amazing. It was during the time that the Club was transitioning to this stadium, so it was a different sort of atmosphere, but you can feel over the last couple of years how things have developed.
This is never an easy place to play and the atmosphere can make this a really difficult place for the opposition."
On leaving Southampton, he added: I'm massively grateful to everyone there. It's a club I grew up at, from the age of eight, and they gave me every opportunity to develop both as a player and as a man.
They gave me the chance to fulfil my dream as a kid, and I'll always be grateful to every single person there who has worked with me, and every fan that supported me home and away."
