Lucas Torreira was already aware of the interest from Arsenal after his agent let him know of a potential approach.
Torreira has revealed that he knew he was signing for Arsenal before the World Cup has started after having a phone call from Unai Emery.
"Well, everything about Arsenal came out before the World Cup," Torreira told Arsenal Media.
"When I was preparing to go to the World Cup with my country, with Uruguay, I received a call from the boss.
"I had already had a talk with my agent who told me about the idea of Arsenal, and I was very happy because when I was in Italy, I never imagined being able to come to the Premier League.
"There was rumours of many Italian teams, this ended up surprising me honestly, and when I received the call from the boss I was very happy.
"When I went to the World Cup, I knew that whatever happened I was going to sign for Arsenal.
"So I was with a calm head, free, and luckily I had a great World Cup with my country."
Torreira is yet to start for Arsenal in the Premier League, coming off the bench in all four of their games so far this season.