South Africa midfielder Andile Jali could miss this summer's World Cup with a heart problem.

Routine tests carried out on all members of Carlos Alberto Parreira's provisional squad for next month's tournament revealed the youngster has a heart complication and the 20-year-old has been sent to the United States for further examinations.

"(We are) heeding a doctor's recommendation that Jali travel to the University of Florida Gainsville Medical Centre in the United States as this facility has a track record of dealing with athletes in this area of medicine," a statement from the South African Football Association said.