Atletico Madrid supporters displayed an anti-Cristiano Ronaldo banner during Wednesday's 4-0 friendly victory over Numancia.
Thomas Lemar, Angel Correa, Geoffrey Kondogbia and Matheus Cunha all netted during the comprehensive win, but it was the Atleti fans who caught the eye as they sent a direct message to the club's owners.
Ronaldo has been loosely linked with a move to Atletico Madrid as he searches for an exit from Manchester United, though club president Enrique Cerezo recently shut down rumours of a transfer.
He said: "I don’t know who invented this story about Cristiano Ronaldo to Atletico Madrid.
"It’s not true. It’s practically impossible for him to come to Atletico Madrid."
Atleti fans then showed their distain towards Ronaldo with a banner that read 'CR7 NOT WELCOME' against Numancia.
Ronaldo has been a constant scourge of Atleti throughout his career, scoring iconic hat tricks against them in the Champions League for both Real Madrid and Juventus.
Listen now to 90min's Talking Transfers podcast, with Scott Saunders, Graeme Bailey, Harry Symeou & Toby Cudworth. This week they discuss Cristiano Ronaldo holding talks with Man Utd, Barcelona attempting to sign Jules Kounde ahead of Chelsea, Phil Foden's new Man City contract, and more. Available on all audio platforms and the 90min YouTube channel.
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90min understands the Portugal forward reiterated his desire to leave United during a recent meeting. Ronaldo wants to join a club competing in the Champions League following the Red Devils' poor 2021/22 season.
He was granted compassionate leave earlier this summer, meaning he missed their tour of Thailand and Australia, but the club don't want to lose the 37-year-old and he is part of new manager Erik ten Hag's plans.