Change is an inherent part of football, and Ruben Amorim's time at Manchester United has been a testament to the beautiful unpredictability of the sport. Over 14 months at the helm of one of football's most storied clubs, the Portuguese tactician brought fresh ideas, passionate energy, and moments that will be remembered by fans for years to come.

BBC Sport has highlighted five Premier League matches that perfectly encapsulate Amorim's journey at Old Trafford—games that demonstrated both the promise of his tactical approach and the challenging nature of managing at the highest level. These fixtures serve as a fascinating case study in modern football management and the courage it takes to implement a new vision at a club with such rich history and high expectations.

What makes Amorim's tenure particularly noteworthy is the boldness of his approach. The young manager, who made his name with impressive work in Portuguese football, never shied away from making difficult decisions or trying innovative tactics. His willingness to trust in his philosophy, even when results didn't always follow, showed the kind of conviction that football needs more of.

Throughout his time at Manchester United, Amorim worked with a squad in transition, helping to develop young talents and bringing his distinctive style of play to the Premier League. The five matches highlighted by BBC Sport showcase the full spectrum of his experience—from tactical masterclasses that had fans dreaming of sustained success, to challenging defeats that taught valuable lessons about the unforgiving nature of top-flight English football.

For supporters and neutral observers alike, these games offered compelling viewing. They demonstrated that Amorim possessed genuine coaching quality and the ability to set up his team to compete against the best. The high points of his reign reminded everyone why Manchester United took a chance on the promising young manager in the first place.

As with any managerial tenure that ends prematurely, there are lessons to be learned for all parties. For Amorim, this experience at one of the world's biggest clubs will undoubtedly serve as invaluable professional development. At just 40 years old, he has decades of coaching ahead of him, and this chapter will only strengthen his credentials and deepen his understanding of elite-level management.

For Manchester United, the search now begins for a new direction, but the club can take heart in knowing that they continue to attract ambitious coaches willing to take on the challenge. The passionate fanbase remains as supportive as ever, ready to back whoever leads the team into its next chapter.

Football's greatest beauty lies in its constant evolution, and both Amorim and Manchester United will emerge from this experience with valuable insights. The five matches that defined his tenure will be remembered not as failures, but as part of the ongoing story of a great club and a talented manager, both seeking to write their next successful chapters.