FC Barcelona and Juventus were involved in a hilarious online exchange after the Catalan giants waded into the Cristiano Ronaldo-Lionel Messi debate.

Barca claimed a 2-0 UEFA Champions League away win over a Ronaldo-less Bianconeri on Wednesday night, courtesy of goals from Ousmane Dembele and a late Messi penalty.

READ: Messi & Dembele sink Juventus

After the match, the Catalan giants' social media team seemingly took the opportunity to have their say on the Ronaldo-Messi debate and shared a tongue-in-cheek post on the club's official Twitter page.

"We are glad you were able to see the [greatest of all time] on your pitch, @juventusfcen," Barca posted, in reference to Messi, alongside a goat and winking-face emoji.

Not to be outdone, Juve were quick to respond, and claimed that Barca would see the real "GOAT" in action when Ronaldo returns to the pitch for the reverse fixture at the Camp Nou in December. 

The Blaugrana currently top Group G with six points from their opening two fixtures, ahead of Juventus, Dynamo Kiev and Ferencvarosi.

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Scroll through the gallery below to see where Ronaldo and Messi rank among the UCL's all-time top goalscorers