The 28-year-old joins Babina Noko as a free agent after mutually parting ways with Betway Premiership champions Pirates ahead of the 2026/27 season.
Buthelezi will challenge Zambian shot-stopper Toaster Nsabata and Equatorial Guinea international Manuel Sapunga for the number one goalkeeper spot for the Limpopo based side.
Sekhukhune are revamping their squad under new coach Cedric Kaze and his recently appointed technical team and have already signed Nyiko Mobbie, Siyabonga Ndlozi, Thabang Mahlangu, Givemore Khupe, Athenkosi Mcaba, Oageng Phiri, D’Angelo Kazeem and Samba O’Neil.
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According to FARPost, Buthelezi joins United on a two-year deal with an option for an additional season after making 22 appearances and keeping 12 clean sheets for the Buccaneers.