The likes of Barcelona, Real Madrid, Manchester United and Liverpool have been sweeping up titles for decades but what is each club's greatest season?
In recent seasons, it has become more and more common to see the biggest clubs winning multiple titles every season.
The gap between the haves and have-nots is growing, and lifting one piece of silverware a year is no longer enough to even guarantee a manager they will keep their job.
Throughout history, the likes of Barcelona, Real Madrid, Manchester United and Liverpool have all been totally dominant of their leagues at different times.
The greatest club side in history is an impossible title to bestow – but what was each club's greatest ever season?
GettyAC Milan – 1993-94
AC Milan’s treble in 1993-94 was one of the more remarkable seasons in club football history.
Under Fabio Capello, Milan won Serie A by three points to second-placed Juventus, despite only scoring 36 goals in 34 league games. Only four teams scored fewer, and two of those were relegated.
However, a defence built around Paolo Maldini and Franco Baresi proved near-impassable, while the handbrake came off in Europe.
Milan put six past Copenhagen and three apiece past Porto and Monaco on their way to the final, against Barcelona’s ‘dream team’ led by Johan Cruyff.
Romario, Stoichkov, Koeman and Guardiola were swept aside 4-0, with Milan wrapping the game up within 60 minutes.
Capello’s side also won the Supercoppa Italiana that season, but were beaten in the European Super Cup and Intercontinental Cup.
AdvertisementGetty ImagesAjax – 1971-72
Ajax became only the second European team to win a continental treble in 1971-72, winning the Eredivisie, KNVB Cup and European Cup.
An iconic squad featuring Johans Cruyff and Neeskens, Arnold Muhren and Johnny Rep and managed by Stefan Kovacs were beaten just once in the league, scoring 104 goals in 34 Eredivisie games and finishing with a 12-1 thrashing of Vitesse on a triumphant final day.
A 3-2 win over FC Den Haag secured the KNVB Cup in the home stadium of rivals Feyenoord while Dynamo Dresden, Marseille, Arsenal and Benfica were dispatched on the way to the European Cup – also at Feyenoord’s De Kuip stadium.
Cruyff scored twice in a 2-0 win over Inter in the final, taking his own tally for the season to 30 and securing the second of three consecutive European crowns.
Getty ImagesArsenal – 2003-04
Arsenal may have only won one trophy in 2003-04, but their Invincibles season in the Premier League is a unique achievement unlikely to be matched in the Premier League.
Thierry Henry, Dennis Bergkamp, Patrick Vieira – the Gunners’ squad reads as a list of English footballing legends, and 03-04 marked the apex of Arsene Wenger’s managerial career.
Arsenal were, however, beaten in the semi-finals of the domestic cups by Manchester United and Middlesbrough, in the Community Shield by United, and knocked out of the Champions League at the quarter-final stage by Chelsea.
Wenger’s first season brought a league and FA Cup double, Arsenal’s first, but the Invincibles season was without doubt the greatest in the club’s history.
GettyAtletico Madrid – 1995-96
Atletico Madrid may have been transformed in the modern era by Diego Simeone, but he didn’t build them out of nowhere.
Their greatest season arguably came in 1995-96 under Radomir Antic, as they claimed a La Liga and Copa del Rey double – with Simeone a key member of the squad.
Atletico finished four points clear of Barcelona in second, while neighbours Real struggled to sixth place, missing out on European qualification completely despite actually winning both Madrid derbies.
A thrilling 6-5 aggregate win over Valencia in the Copa del Rey semi-finals sent Antic’s side to the final where they claimed a 1-0 extra-time victory over Barca.
Atletico wouldn’t win the Spanish title again until 2013-14 – when Simeone’s side became the first team outside the El Clasico duopoly to win the league in 10 years.