Kaizer Chiefs rising stars Mduduzi Shabalala and Wandile Duba have been urged to take their football careers seriously.
Ngubane believes that both players have the potential to be key pillars for the club this season if they are willing to grow as footballers.
"I'm concerned about Mduduzi; he is not doing enough," Ngubane tells KickOff.
READ | Motaung Jr. 'excited' over Chiefs new recruits
"With Mduduzi and Duba, I don't know what their problem is. They are inconsistent, and they are still young.
"Perhaps their lifestyle isn't conducive to their performance. If Mduduzi can focus and take his game seriously, he has the talent to become a star.
"However, he plays well in Cape Town one week and then performs poorly just days later against Richards Bay FC. The same applies to Duba.
"I sincerely hope these two boys will take Kaizer Chiefs and their football seriously. That's my advice to them. You cannot afford to be inconsistent while playing for Kaizer Chiefs."
READ | Does Chiefs’ perfect start mean good or bad omens: The answers...
Both 21-year-olds, Shabalala and Duba, have participated in all three of Kaizer Chiefs' games this season, with Duba providing one assist.
Shabalala and Duba will be back in action on Wednesday, August 27, when the Glamour Boys host Mamelodi Sundowns at the FNB Stadium.
