The Martyrs make the long trip to Southampton ahead of their BetVictor Southern League Premier tie with Blackfield & Langley.
Gavin Williams and his side however, have received additional injury concerns ahead of the fixture.
One player who will miss tomorrow is Kieran Lewis who is still recovering from a concussion. He is expected to make a full recovery over the next few weeks.
Secondly, Ben Swallow will be unavailable due to a calf injury that he picked up during training.
Also, Merthyr will be without Dan Summerfield who is away in Gambia on a trip involving his studies.
Finally, both Owain Jones and Corey Jenkins are facing late fitness tests which will determine their availability for tomorrow's clash.