Portuguese racer Antonio Felix da Costa and Spain's Carlos Sainz junior will test for Formula One champions Red Bull at next month's young driver session at Silverstone, the team said on Friday.
Da Costa will be in the car on July 17 and 18 while Sainz, son of the former world rally champion, will drive only on the third day.
Sainz junior, still only 18, is currently competing in the GP3 series.
Red Bull have a vacancy for next season, with Mark Webber departing, while sister team Toro Rosso will also have a seat going if one of their current drivers graduates to take the Australian's place.
Photograph: Mark Thompson/Getty Images
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