The 41-year-old hangs up his boots after a sparkling career, which included 33 Premier League appearances across two seasons for United after joining in the summer of 2016. While at Old Trafford, he scored 17 Premier League goals, including the competition's 25,000th.
He also produced five assists and was named the December 2016 EA SPORTS Player of the Month.
Ibrahimovic helped Man Utd to League Cup and UEFA Europa League success, his only European title.
After leaving Old Trafford in 2018, Ibrahimovic signed for MLS side LA Galaxy, where he spent two seasons before returning to AC Milan.
In a sparkling career spanning four decades, the Swede won 34 trophies - including 14 league titles, and was nominated for the Ballon d'Or 11 times.
He scored 511 goals for major European clubs including Ajax, Barcelona, Juventus, AC Milan, Inter, Paris Saint-Germain as well as Man Utd, winning league titles in four countries.