Liverpool tried to hijack Atletico Madrid's deal for Ajax star Toby Alderweireld.
The Belgian international revealed the Anfield side came back with a deal in last few days of the window, but was convinced the La Liga side would be the better choice.
"The club has been following me now for two or three weeks, and you could see they really wanted me," he said.
"That is why I turned down approaches from other teams.
"Liverpool, for example, appeared in the last few days, but the truth is that Atletico made a huge effort to convince me."
Alderweireld also said his international colleague Thibaut Courtois helped him decide to join the Spanish side after a chat.
"Courtois is naturally very happy with my arrival," he said.
"In the end I am coming to 'his Atletico'. He said positive things to me as I was studying the offer. He said it was a club with great fans and that he was very happy playing at the Calderon."