Melbourne City have signed former Brisbane Roar midfielder Luke Brattan for next season.

It's understood Brattan has agreed to a one-year loan back to the A-League from Manchester City, who signed the 26-year-old on a free transfer last year.

Meanwhile, Anthony Caceres is also believed to have extended his loan deal from Manchester to Melbourne for another year, giving John van 't Schip's side further depth in the middle of the park ahead of the imminent departure of Socceroos star Aaron Mooy.

Both moves are allowed because both players had signed for Manchester City prior to Football Federation Australia's closure of what has been dubbed the "Caceres" loophole.