Vieira: Man City failure if Karim Rekik doesn't make it
Rekik, 17, moved to City last year from Feyenoord.
"Karim has a natural talent and calm temperament as a central defender," Vieira told De Telegraaf. "This guy has so much talent. If he does not make it, it will really be a failure for us.
"Thus we put ourselves under pressure, but Karim knows he has a responsibility to reach the top."