Jay Rodriguez and Morgan Schneiderlin will not be sold, according to Southampton chairman Ralph Krueger
Everton midfielder Ross Barkley has signed a new four-year deal with the club.
Paul Jewell does not feel under any added pressure to deliver success in what is the final year of his contract at Portman Road.
The former Wigan boss was appointed in January 2011 on a two-and-a-half year deal, replacing Roy Keane with Town hovering dangerously above the drop zone.
Jewell went on to secure a mid-table finish before rebuilding his ranks last summer with a host of new signings, but this season's promotion hopes soon evaporated and Ipswich eventually went on to finish in 15th place.
With plans taking shape for next term's assault on a top-six finish, Jewell told the club's official website: "I'm not under any extra pressure because it's the last year of my contract here. I can't work any harder than I already do. I can't have a greater desire to do well here than I already have.
"I can remember at the last game of this season at home. We were losing 3-0 to Millwall and a supporter came down and started shouting 'you don't show any passion, you don't shout', I took exception to that because I kick every ball out there.
"I make mistakes but I don't think anyone can question my intensity and desire. That won't change. I am what I am. Everything I do I try and do to the best of my ability."