Sean, a two year old boy, attends with his father who is concerned that his son has an ear infection and needs antibiotics. Sean has been tugging at his ear yesterday along with coryzal symptoms and had an intermittent temperature for the past four days. He has had Paracetamol twice with good effect. He is eating and drinking slightly less than normal but having the usual amount of wet nappies and there are no other systemic symptoms. He is normally a well child, up to date with immunisations and has no recent travel history. Thorough examination reveals an erythematous throat and a bulging tympanic membrane on the right side. Observations are all within normal limits.

Based on the likely diagnosis, what is the next most appropriate step in his management?