Nxumalo has missed the Urban Warriors' three league matches in 2017 so far due to health issues, which stretch back as far as August 2015 when he had the first of four documented epileptic attacks.
However, the former Supersport United striker has since returned to training at Ikamva under the watchful eye of Dutch coach Stanley Menzo.
Speaking in an interview with KickOff.com, Nxumalo confirmed that he has fully recovered from his illness and is ready to play again.
"I am okay now. Everything is fine,” Nxumalo tells this website.
"I am training and ready to play, any time,” he added.
Ajax will be desperate for maximum points when they face Amakhosi this weekend, with the Mother City club just five points clear of the relegation zone, although they know they will be up against it when the Premiership title-chasing Chiefs head to Cape Town.