Town are hoping midfielder Giles Coke will be fit for the start of the season having undergone knee surgery towards the end of what had been an injury-hit first campaign with the Blues.
"Giles tore the back of his cartilage and had surgery to repair it rather than remove the damaged cartilage,” physio Matt Byard told the club website.
"Hopefully he will be outside continuing his rehab in the next two weeks and the target is for him to be ready for the start of the season.”
The 30-year-old, who joined Town last summer following a trial having been released by Sheffield Wednesday, made only four starts — just one in the league — and 10 sub appearances during 2015/16.
Meanwhile, Byard says left-back Myles Kenlock could be fit for the friendly at Cambridge United after suffering an ankle injury early in pre-season
"Myles jarred his ankle in the first week of pre-season,” he added. "He is running on the AlterG and he should return to running outside next week.
"We are looking at the Cambridge friendly Saturday week as a return for him, hopefully.”