Premiership pair Liam Shiels and Shaun Burgoyne are set to miss three and four weeks respectively following hamstring injuries.
Physical Performance Manager Luke Boyd described both injuries as "standard hamstring" issues.
"There's not too much cause for concern, but at this stage we're thinking they'll both miss between three and four weeks," Boyd said.
Recruit Chad Wingard is nearing his return and debut in the brown and gold following a calf strain.
"He is progressing really well and has had a really good block of work.
"He'll train fully this week and will be a test to play."
Wingard – test
Harrison Jones (shoulder) - test
Minchington (hamstring) – 2-4 weeks
Shiels (hamstring) – 3-4 weeks
Burgoyne (hamstring) – 3-4 weeks
Birchall (calf) - indefinite
Mohr (knee) - season
Mitchell (leg) - season