5. Manchester United (1998/99)
Alex Ferguson’s legendary treble-winning squad will never be forgotten in English football.
Greats such as David Beckham, Paul Scholes, Ryan Giggs and Peter Schmeichel were in the squad. In short, they had no limits and fought hard right until the final whistle.
The biggest moment undoubtedly came in Camp Nou, where United came back from a goal down to beat Bayern Munich 2-1.
Teddy Sheringham and an injury-time strike from Ole Gunnar Solskjaer sealed the win.
It won them a famous Champions League title to add to their successes in the Premier League and FA Cup that season.