Striker Rickie Lambert has written a letter to Southampton fans thanking them for their support during his time at the club.
The Three Lions boss has largely rewarded Premier League form in a youthful-looking squad for the tournament in Brazil. See the full squad:
A disappointing afternoon for Southampton in their Premier League clash with Manchester City.
The fee received for Adam Lallana will allow the club to further develop the first-team squad for the 2014/2015 season. #saintsfc
And I wish you all the best in the future
Also a massive thank you to everyone at @southamptonfc including players , staff and fans. Loved every minute of my time there
Delighted to have signed for @manutd ! Looking forward to the future, thank you to all the fans for your nice messages ?
Saints say Shaw will 'carry forward our top-class pedigree' as his completes his move to Manchester United.
Southampton Football Club released a statement on their website this afternoon.
– Executive Director Les Reed
While we are sad to see Luke depart the club, we fought to ensure that we got the right deal for a player in whom we have invested a great deal of work over the past decade. Luke joined us at the age of eight, and our academy staff and coaches have helped him to progress into a top-class player. He will leave our club and carry forward our top-class pedigree, as others have done before. This deal is a good one for Southampton Football Club, and hopefully sends a clear message to other clubs wishing to bid for our players.”
Les Reed: “We fought to ensure that we got the right deal for a player in whom we have invested a great deal of work over the past decade.”
More from @lukeshaw3: "I'm looking forward to this new chapter in my life & learning from the world-class players & management at the club."