A furious Cristiano Ronaldo has broken his silence after once again testing positive for COVID-19, which ruled him out of the clash with Lionel Messi's FC Barcelona on Wednesday night.

Read: Messi Sends Message To Ronaldo

The Juventus superstar will not be eligible to play in his side's UEFA Champions League match against Barca after testing positive for the virus once again.

The 35-year-old, who is asymptomatic and continued to train on his own throughout his self-quarantine, has since taken to social media to post an image of himself along with the captain: "Feeling good and healthy! Forza Juve!"

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Ronaldo then commented on the post, writing "PCR IS BULLSH*T", seemingly hitting out at the tests used to detect COVID-19.

He is set to miss out on a reunion of sorts with Messi this week, which would have been the first time the longstanding rivals would have faced each other on the field since Ronaldo left Real in 2018.

Read: Ex-MDC Striker Makes UCL History

The Juve star was also sidelined for the Bianconeri's UCL encounter with Dynamo Kiev last week, as well his club's Serie A draws with Crotone and Hellas Verona after first testing positive for COVID-19 on 13 October while on national team duty with Portugal.