Formed in 2013, this is New York City’s first ever appearance in the showpiece game.
They booked their place in the final at Providence Park by beating Philadelphia 2-1 to win the Eastern Conference for the first time.
Manager Ronny Deila and assistant Nick Cushing now stand on the brink of an historic success.
Everyone at Manchester City wishes our sister club all the very best as they look to become MLS champions!
And some familiar faces from across the City Football Group have sent their GOOD LUCK messages to the boys ahead of the biggest game in US soccer.
Watch the video above to see the full set of messages!
Portland v NYCFC kicks off at 20:00 UK on Saturday 11 December.