Long-serving midfielder Matt Bloomfield is expected to return to training by the end of July.
Meanwhile, frontman Matt McClure (knee) will begin running within the next seven days and resume training in three weeks.
“I’m increasing my workload day on day and I can’t wait to get back out there with the lads.”
Blooms – who recently agreed a deal to take him into his testimonial season at Adams Park - hasn’t played since being diagnosed with pelvic shear last August.
The 29-year-old has stepped up his rehabilitation and is now running outside, as well as continuing to strengthen his core.