[2] Kidd had the distinction of scoring on his 19th birthday for Manchester United in their 4–1 victory over Benfica in the 1968 European Cup Final.

With the Toffees, Kidd netted 12 times in 44 appearances and was sent off in an FA Cup semi final against West Ham United.

Over the next three years Kidd helped to bring through a host of talented players like Ryan Giggs and Darren Ferguson.

Despite Kidd having a promising start with Rovers, which saw him voted Premier League Manager of the Month and having also spent nearly £20 million on new players in his first four months in charge he was unable to save them from being relegated from the Premier League (just four years after being champions) and Kidd was dismissed on 3 November 1999 with Rovers standing 19th in Division One.

Ferguson was angered that when Kidd was his assistant manager he had questioned United's 1998 summer signing of striker Dwight Yorke.

Kidd was upset at Ferguson's attack on him and responded by saying: "I believe Walt Disney is trying to buy the film rights to his book as a sequel to Fantasia.

[11] He was forced to end this role in May 2004, just weeks before Euro 2004, due to undergoing surgery for prostate cancer.

However, Kidd instead accepted an offer to work as assistant to Neil Warnock at Sheffield United a few months after their promotion to the Premier League.

[15] On 11 February 2009, Kidd was appointed as the assistant to caretaker manager Paul Hart at Premier League side Portsmouth.

In an extraordinary finale to the season, City scored twice in stoppage time to beat Queens Park Rangers 3–2 in dramatic style to win the Premier League on goal difference from Manchester United.

[22] Kidd returned to his assistant role following the appointment of Manuel Pellegrini and worked with both him and his successor Pep Guardiola, before leaving after the 2020–21 season.