BBC Sport - Ole Gunnar Solskjaer and Gary O'Neil are among the leading candidates to become manager at Ipswich.
Former Manchester United boss Solskjaer is high on the Tractor Boys' list to succeed Kieran McKenna at Portman Road.
Solskjaer took a break from management after leaving Manchester United in 2021 but was keen for a quick return following his exit from Besiktas last summer.
He was overlooked for a return to Old Trafford last season, in favour of Michael Carrick, with United feeling it would be better to avoid someone who had done the job before.
McKenna worked under Solksjaer - along with his assistant Martyn Pert - at Manchester United when the Norwegian led them to second in the Premier League in 2020-21.
BBC Sport reported Ipswich's interest in O'Neil earlier this month and the Strasbourg boss has long been admired by the club's hierarchy.
He played at Bristol City when current Ipswich chief executive Mark Ashton was CEO.
The French side had been confident of keeping the former Wolves head coach, who joined the club in January, but he remains a contender for the Tractor Boys.
The club are looking for a new head coach after McKenna stepped down last week, despite leading them back to the Premier League by finishing second in the Championship last season.
The 40-year-old took charge of the Tractor Boys in 2021 and guided them to three promotions in the past four seasons, two of which have taken the club into the top flight.
McKenna was linked with the Fulham job after Marco Silva's departure, but quit to take a break from the game and spend more time with his family.
"I feel this is the right time for me to step aside," he said.
"I do so with great pride at the incredible progress we have made and with huge hope and optimism for the future of the club."