Defender Acerbi, part of the stubborn Inter backline that frustrated City at the Etihad, was caught on camera seemingly asking Haaland for two of his shirts.
It is customary for players to trade their jerseys after matches in a show of respect but Haaland looked to jokingly wave away the request by telling Acerbi to 'f**k off'.
In footage shared on social media by TNT Sports, a smiling Acerbi could be seen holding up two fingers to the striker as part of his cheeky question.
Erling Haaland gave an x-rated response to Francesco Acerbi after he asked for two shirts
In turn, Haaland appeared to shoot back by asking 'Two?' and then swearing, leading his opponent to burst into laughter before the pair separated.
City had debuted their eye-catching new Oasis-inspired kit against the Serie A title holders, with its unusual colour palette and creative lettering on the back raising eyebrows.
Regardless, he stands just one goal away from the sensational milestone despite only having played 104 matches for the club since joining in June 2022.
He has started the new campaign in red-hot form after scoring nine goals in four Premier League games, scoring in each of those matches.
Haaland's team-mates also missed several golden openings against Inter and Pep Guardiola admitted post-match that the Italian giants defended masterfully.
'We faced a really difficult team,' Guardiola told reporters.
'I'm still really, really satisfied for the game we played, especially with how [Inter] defended, they are masters of that, so big, they help each other unbelievably.