Nomvethe on September 14 announced he would hang up his boots at the conclusion of 2018/19, bringing a close to an illustrious 21-year career.
While 40-year-old Nomvethe is yet to reveal his plans for after football, this website has been informed that 36-year-old Khenyeza will move into coaching and help Ayanda 'Cobra' Dlamini steer the club's reserve team.
"Khenyeza will play his last season with Usuthu and both the player and the management have spoken about it," a source tells KickOff.com.
"He's set to coach the MultiChoice Diski team afterwards along with Cobra for next season."
Usuthu team manager Qedi Dlamini says he has no knowledge of the matter.
"He hasn't told us anything," Dlamini says.
"I won't say those who have written that he's retiring [are wrong] if they were told by him, but to us he hasn't said anything."
Khenyeza joined the Durban-based outfit in 2016 from neighbours Golden Arrows after falling out of favour with Abafana Bes'thende coach Clinton Larsen.
The former Kaizer Chiefs and Mamelodi Sundowns striker has played six games this season, while he scored four goals and provided four assists in 22 matches in all competitions last term.
Khenyeza and Nomvethe are the only active PSL players to have scored over 100 goals in the South African topflight.
'Bhele' is the PSL's record scorer with 121 goals - 11 ahead of second-placed Khenyeza.