The club recently handed the 40-year-old and fellow veteran striker Mabhuti Khenyeza one-year contract extensions.
Nomvethe is the oldest active player in the PSL and is the topflight's record scorer with 121 goals, having netted twice last season in 21 appearances in all competitions.
While sources have informed this website that Nomvethe may be employed elsewhere in Usuthu's structures when he retires from playing, 'Bhele' is still unsure when he will call time on an illustrious career.
"I can't tell you for now. I think to announce things, it's coming, but I don't know when," Nomvethe said when asked if he was any closer to retirement.
"But I'm enjoying myself and I still have another opportunity to play on at the club."