"Is 50m not too much? No, it doesn't seem enough," Udinese patron Gianpaolo Pozzo told AS.
"I have no doubt that if he stayed with us for another year he would be worth even more than that. He's the best player of his generation. He's like Cristiano Ronaldo when he was 22.
"We look after hundreds of players, we've been in this business for some time and we know when we have a diamond. Alexis Sanchez is one.
"If a club wants him then they will have to pay his price in full and that is 50m.
"He's the cherry on the cake which [Barca boss Pep] Guardiola is missing, a player who can make the difference," Pozzo added. "When you buy someone you shouldn't just look at his price tag.
Reports have suggested that a switch could be sealed soon, but Pozzo has indicated that we'll have to wait a while longer before Sanchez's future is resolved.
"I think that if a deal is done then it will happen at the last minute on the last day. That's normal in cases like this. I repeat, I'm in no hurry to sell Alexis."