South African broadcaster Thabiso Mosia spotted the man wearing the man and shared the picture with his followers.
A Twitter user also shared his own picture of a Chiefs fan in Argentina.
Chiefs fans were happy to learn that the club is supported internationally with fans.
— Tracksuit (@ThabisoMosia) November 21, 2019
Saw some in Argentina wearing the new home Jersey
— Luando Shakes Mashalaba (@LwandoMashalab2) November 21, 2019
Top ten best shirts to lookout for is something that helps sales and orders. They can teach us how they built the brand
— #Ntumbuluko (pty) ltd (@thusweny) November 21, 2019