The Hull born Aussie only signed for the Manchester club today, on a free transfer after being released from Brisbane Roar, and was then immediately loaned to the Whites and he'll be at the club until January 3rd.
Brattan, who looks prone to an interesting hair cut, had spent five years at the Roar, scoring 4 times in 91 appearances, and winning three A-League titles in the process.
He spent his youth career Rochedale Rovers and Queensland Lions before making the movie to Brisbane.
The 25-year old has been capped eight times, scoring once, for the Australian u20s side and was recently called up the Australia squad for the first time - to replace the injured Mile Jedinak for a World Cup 2018 qualifier against Bangladesh.
This whole situation is a little strange, no one seems to know why City have signed Brattan on a four-year deal, and midfield certainly isn't a position in which we are liking at the moment.
However, with recent injuries to Jay Spearing and Mark Davies, Liam Trotter being loaned out, Medo disappearing completely and Fillip Twardzik not being good, we may see quite a bit of Brattan in the games to come.