Khumalo was born in Manzini but relocated to Pretoria, South Africa during his infancy.[2] There, his late father was a language lecturer at the University of South Africa and his mother was a teacher.[3] During his time in Pretoria, Khumalo studied towards a degree at the University of Pretoria while embarking on a professional football career.[3] He later had to put his studies on hold, however, following a move to England. Upon his arrival in England, Khumalo was reported to have come from an impoverished background and being one of fifteen siblings. He later denied the reports, describing his family as middle class and confirming that he was an only child.[3]
Following his arrival at SuperSport United, Khumalo soon established himself as an important player in Gavin Hunt's side and was later named captain of the club.[5] Over the course of the next three seasons, he helped the club to three consecutive Premier Division and became the youngest ever player to lift the league title, at the age of 23.[5][6][7] Khumalo's spell with the club coincided with the SuperSport United entering into an affiliation agreement with Premier League club, Tottenham Hotspur, and in 2010 he signed a pre-contract to join the London-based club in January of the following year.[5]
Tottenham Hotspur
On 26 October 2010, it was announced that Khumalo would be joining Tottenham Hotspur in January 2011 from partner club SuperSport United after a successful trial in September, subject to a work permit for a fee of £1.5 million. Tottenham confirmed the completion of Khumalo's transfer from SuperSport United on 7 January 2011.[8]
Loan moves and release
On 24 March 2011, Khumalo made an emergency deadline day loan move to Championship club Preston North End.[9] He made his debut for Preston on 2 April 2011 in their 2–1 victory over Swansea.
On 25 July 2011, Khumalo moved on a season-long loan to Championship club Reading.[10] However following the arrival of Kaspars Gorkšs from Queens Park Rangers, Khumalo's appearances were limited, and he did not play a first team game after August. On 1 February 2012, it was confirmed that Khumalo's loan would be terminated early, to allow him to return to Tottenham.[11]
On 6 July 2012, Khumalo joined Greek club PAOK on loan, for one year.[12][13]
Khumalo was signed by Doncaster Rovers of the Championship for a season's loan on 31 July 2013.[14] On 6 August in his second game for Rovers he scored the winner in a 1−0 victory against Rochdale in the League Cup.[15]
Khumalo was released by Tottenham Hotspur at the end of 2014–15 season,[18] without ever playing a competitive game for the club in 4.5 years.
Return to South Africa
On 4 August 2015, it was announced that Khumalo had signed for SuperSport United, leaving Tottenham Hotspur after four years and no competitive appearances.[19] He made 10 appearances in all competitions for SuperSport before moving to fellow Premier Soccer League side Bidvest Wits.[20]
Retirement
On 21 September 2021, it was announced that he is now retiring from football.[21]