The Llanelli Scarlets player has aggravated bruising to his shoulder which means he needs to avoid contact for at least four weeks. He will be replaced by promising 21-year-old Dragons prop Rhys Thomas on the tour.
“Iestyn has been unfortunate but a good rest and the chance to train well throughout the summer should see him right for next season,” national coach Mike Ruddock said.
“This now gives Rhys the chance to join the tour party and show what he can do at
