 On 5 July the club confirmed Brattan's loan would be extended by a third season.On August 6, 2018, during the first half of the First Round match of 2018 FFA Cup against Brisbane Roar Brattan fell to the ground in a challenge with Stefan Mauk and was accidentally kicked in the head by the opposition player as Mauk kicked the ball away.When the club doctor suspected he had suffered a spinal injury, the game was suspended for 40 minutes as they awaited a specialist ambulance designed for transporting patients with head, neck or spine injuries.