Valencia midfielder Viana slams Ziganda: Worst coach, worst person
Viana is currently on-loan at Sporting Lisbon has blasted Ziganda, who he worked with during the 2007/08 season.
He told Record: "I found the worst coach at Osasuna and the worst person. I was never a starter, I trained alone, I was not invited, I was a substitute.
"He treated the substitutes with contempt."