The pair are currently with the National Under 20 team that is preparing for a four-nation championship and will not be available for a trip to Machakos.
Francis Kimanzi side are yet to taste defeat this season even as they prepare to take on a Sofapaka side, still trying to find their balance after losing the opening fixture 3-0 to Bandari.
The 2009 champion, however, bounced back from the fall with a slim 1-0 win over Kakamega Homeboyz in the last league outing.
But Mathare are aware that they will be facing a side that stung them 2-1 in the last season.
Long-term absentees Roy Syamba (knee) and Abubakar Keya (knee) are still unavailable for selection.