Town boss Paul Lambert is reported to be under increasing pressure due to dressing room unrest.
According to Football Insider, there is "a dressing room mutiny” with relationships between Lambert and some of the club’s senior players "fractured”.
The Blues are claimed to be considering sacking the 51-year-old and are looking at potential replacements.
However, owner Marcus Evans released a statement backing Lambert just over a month ago and is not believed to be looking at making an imminent change.
Lambert has been in charge at Portman Road since October 2018 and signed a new five-year contract on New Year’s Day 2020.
After failing to prevent relegation from the Championship in 2018/19, the Blues finished 11th in their first season in League One.
This season, having started well, they have drifted out of the play-off places, just as they did in 2019/20.
Following Saturday’s 3-2 home defeat to Swindon, the Blues are eighth in the table, having lost four of their last five matches at Portman Road.
Overall, Lambert has been in charge of 103 Town matches with the Blues winning 33, drawing 25 and losing 45.
Earlier today, the South West Branch of the Supporters Club joined independent supporters group Blue Action in calling for a managerial change.