Erling Haaland at Arsenal - that would have been quite something wouldn't it? And it's not as far-fetched as you might imagine.
The Gunners could have signed the Norwegian striker for a mere £7million. Instead he moved to Red Bull Salzburg and then Borussia Dortmund and now Manchester City in the Premier League - head coach Mikel Arteta's former employers no less.
But it was not just Arsenal who missed out back in 2017. Liverpool have also been told they missed out on the chance to sign the big frontman because of one key scouting mistake. The Norwegian international has set the Premier League alight since joining Manchester City in the summer, continuing his fine form from the Bundesliga.