upload.wikimedia.org/wikipedia/en/thumb/7/7a/Manchester_United_FC_crest.svg/190px-Manchester_United_FC_crest.svg.pngThe club crest is derived from the Manchester City Council coat of arms, although all that remains of it on the current crest is the ship in full sail.
The devil stems from the club's nickname "The Red Devils"; it was included on club programmes and scarves in the 1960s, and incorporated into the club crest in 1970.
In 1975, the red devil was granted as a heraldic badge by the College of Arms to the English Football League for use by Manchester United.
...........................................................................................................................................................................................................................................
upload.wikimedia.org/wikipedia/en/thumb/e/eb/Manchester_City_FC_badge.svg/190px-Manchester_City_FC_badge.svg.pngCity had previously worn three other badges on their shirts, prior to their current badge being implemented in 2016.
The first, introduced in 1970, was based on designs which had been used on official club documentation since the mid-1960s.
It consisted of a circular badge which used the same shield as the present badge (including a ship, based on the City of Manchester coat of arms), inside a circle bearing the name of the club.
In 1972, this was replaced by a variation which replaced the lower half of the shield with the red rose of Lancashire. In 1976, a heraldic badge was granted by the College of Arms to the English Football League for use by City.
The badge consisted of the familiar ship above a red rose but on a circular device instead of a shield (blazoned as "A roundel per fess azure and argent in chief a three masted ship sails set pennons flying or in base a rose gules barbed and seeded proper").
A new club badge was adopted in 1997, as a result of the previous badge being ineligible for registration as a trademark.
This badge was based on the arms of the city of Manchester, and consisted of a shield in front of a golden eagle.
The eagle is an old heraldic symbol of the city of Manchester; a golden eagle was added to the city's badge in 1958 (but had since been removed), representing the growing aviation industry.
The shield featured a ship on its upper half representing the Manchester Ship Canal, and three diagonal stripes in the lower half symbolised the city's three rivers – the Irwell, the Irk and the Medlock.
The bottom of the badge bore the motto "Superbia in Proelio", which translates as "Pride in Battle" in Latin. Above the eagle and shield were the three stars, added for decorative purposes.
On 15 October 2015, following years of criticism from the fans over the design of the 1997 badge, the club announced they intended to carry out a fan consultation on whether to discontinue the current badge and institute a new design.
After the consultation, the club announced in late November 2015 the badge would be replaced in due course by a new version which would be designed in the style of the older, circular variants.
A design purporting to be the new badge was unintentionally leaked two days early prior to the official unveiling on 26 December 2015 by the IPO when the design was trademarked on 22nd December.
The new badge was officially unveiled at Manchester City's home match against Sunderland on 26th December.
