Erling Haaland hilariously told KSI he used to watch his video when he was younger during his appearance on Logan Paul's podcast.
KSI and Paul signed the Manchester City goal-machine to Prime, making him their first-sponsored footballer.
He joins UFC stars Israel Adesanya and Alexander Volkanovski in becoming Prime athletes, with Terence Crawford also promoting the sports drink in his fight against Errol Spence.
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Lifelong Gooner KSI and Paul also have a deal in place with Premier League club Arsenal.
The YouTube personalities now boast Haaland, who scored in Man City's 2-1 win over Sheffield United last weekend.
After the 23-year-old linked up with Prime, he joined Paul on his podcast, with KSI also appearing on the episode.
He was asked what it's like being him, his relationship with his father and TikTok videos of himself, among other topics.
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The Norwegian also revealed he used to watch KSI's videos when he was younger, which provoked a brilliant reaction.
Paul asked Haaland: "You used to watch KSI..."
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Haaland replied: "Yeah, I watched a little bit when I was younger."
KSI reacted by saying: "Aw, I'm gassed!"
Haaland becoming a Prime athlete comes after he enjoyed an ultra-prolific campaign at Man City last season.
He scored a staggering 52 goals in all competitions as he helped his side to a famous treble, winning the Premier League, FA Cup and the Champions League.
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And he's already off to an impressive start in the 2023/24 term, having scored three league goals in three matches.
He opened the scoring at Bramall Lane as the Blues edged out Sheff United 2-1 last Sunday.
Topics: Logan Paul, KSI, Erling Haaland, Football
Nasir Jabbar