Midfielder Massimo Luongo has signed a new one-year deal with the Blues.
The Australian international, who spent the first half of last season at Middlesbrough without featuring, rejoined Town in January signing a short-term contract to the end of the season following a trial and made a huge impression as the Blues confirmed their promotion to the Championship.
The 30-year-old, who previously had a spell on loan at Portman Road in 2012, is yet to finish on the losing side since his return.
"The day we secured promotion was unbelievable but I have enjoyed my whole time here,” Luongo told iFollow Ipswich.
"It took a little while for me to get going and get a run of games, but I still felt like I was pushing the lads that were playing and that I could contribute.
"I always thought I could make an impact and I’m very pleased with how it has all gone so far.
"I’m delighted to stay and I think it’ll be special playing for the club in the Championship. The division looks strong but it’s a big season for us and it’s a season to be excited about.”
Since his return, Luongo has made 13 starts and three sub appearances, scoring twice, adding to his eight starts, three games from the bench and one goal in his first stint.
Elsewhere, reports that the Blues are among the clubs keen on Rotherham winger Chiedozie Ogbene are understood to be wide of the mark.
Former Town centre-half James Wilson, 34, has left League One champions Plymouth after two years with the Pilgrims having failed to agree terms. The Welshman joined Argyle on a free transfer from the Blues.