The match against the Coastal XV comes just four days before the first Test in Durban and could provide the final chance for a number of currently injured Springboks to prove their fitness before the first or even second internationals.
Watson's role as president of the union in which the team resides would mean he could be heavily involved in selection himself but he has instead claimed he wishes to take a back seat.
Watson has long been surrounded by controversy following his stance against the apartheid regime during his playing days and his recent views on the state of the game in South Africa.
He has explained that he is determined not to take the focus from the occasion itself and will therefore not be choosing the players to face Ian McGeechan's men in the sixth game of the 10-match tour.
"I don't want people to say Cheeky Watson is picking this guy or that guy," Watson told Sport24.
"That removes the attention from me and places it where it should be - on the game.
"We hope it will be a strong side that is selected. That is why I asked that (former Springbok selector Francois) Davids should work with Peter de Villiers.
"If there are players Peter would like to see in action (with an eye towards the Lions series), they can be picked."