Musharu, who turns out for Zimbabwean topflight club How Mine, touched down in Durban yesterday and will today start training with Usuthu.
AmaZulu have been tracking Masharu in the CAF Confederation Cup where he had scored six goals in the competition before his side were eliminated by Nigeria's Bayelsa United two weeks ago.
The 27-year-old remains the top scorer in the second-tier continental tournament, along with SuperSport United hitman Mame Niang.
snl24.com/kickoff is aware that although the initial arrangement is that Musharu, who is managed by Zimbabwe-based agent Gibson Mahachi, stays in Durban for a week, Usuthu are considering extending the assessement period by another week.
Craig Rosslee's side have already signed Zambian forward Bornwell Mwape, while DR Congo striker Eddy Emomo and Yunus Sentamu from Uganda also had trials at the coastal outfit.