Think of it as Otamendi replacement + better player with at least 3-4 additional years on paper. Plus a lot more competitionKoulibaly would go straight into the 11, and would be a massive signing. No way would Napoli turn down even a £80-90M bid - and if its true we want Maguire even at £70M its an absolute no brainer.
If Maguire was spanish and playing for valencia, we'd be talking £25-30M.
Even at 28, we'd still get 4 absolutely top years from him.