Mohumi has been impressing during training sessions at Bakgakga over the past few days in the hopes of securing a permanent deal.
The Mamelodi-born midfielder is currently without a club after departing the Venda Football Academy at the beginning of the season.
"So far so good and he has been training well and getting along very well with everybody in the team," a club source tells KickOff.
"The decision whether to sign him or not will be taken after a friendly match on Friday."
Former Orlando Pirates midfielder Riyaad Norodien was also due to be assessed by the club but failed to report for training.