The 21-year-old striker has joined the Blues from Manchester City for £15 million, potentially rising to £20 million with add-ons.
Delap, who has been capped by England from U16 to U21 levels, experienced Premier League and Champions League football as a teenager and gained Championship experience during loan spells at Stoke, Preston, and Hull.
He has signed a five-year contract at Portman Road.
Blues boss McKenna said, “We are delighted to bring Liam to the club. We believe he has the qualities to help the team this season and become an important player for the club for many years. He possesses outstanding physical and technical attributes and is eager to continue learning and improving. With his early first-team experience, we see great potential for his development here.”
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Delap remarked, “I’ve heard so many positive things about the club’s atmosphere and the way the players and staff work together, which is why I’m thrilled to join.
“The manager prefers to play exciting, fast-paced football, and I’m eager to be part of that. I aim to contribute with goals and assists and will work tirelessly to support the team.”
**TOWN’S SUMMER BUSINESS**
**IN:** Omari Hutchinson (Chelsea, £18m), Ben Johnson (West Ham, free), Jacob Greaves (Hull City, £15m), Liam Delap (Man City, £15m)
**OUT:** Gassan Ahadme (Charlton, £1m), Idris El Mizouni (Charlton, £400k), Sone Aluko (retired, now a coach), Kayden Jackson (Derby, free), Vaclav Hladky (rejected new deal), Janoi Donacien, Dominic Ball, Panutche Camara, Nick Hayes (all released)
**SQUAD AS IT STANDS**
**GK:** Walton, Slicker
**RB:** Johnson, Clarke
**CB:** Greaves, Woolfenden, Burgess, Edmundson, Tuanzebe, Ndaba, Baggott
**LB:** Davis
**CM:** Morsy, Luongo, Taylor, Humphreys*
**RW:** Hutchinson*, Burns
**AMC:** Chaplin
**LW:** Broadhead, Harness
**ST:** Hirst, Delap*, Al-Hamadi, Ladapo
* Players who won’t count towards the 25-man squad limit as they were under 21 at the start of the year
