What a gorgeous lad, I hope he finds his way home to you. Have you spoken to vets in the area? If he's been gone for a while someone might have taken him in for his jabs or any treatment.
I seen this via facebook I have problem with my male cat He whent out 1 and half years ago,he returns every 4-5 months I feel someone is feeding him I really hoped someone sees this post and reconigze his face so he can be back rehomed with his propa owners Dont give up hope,hopes hes back soon safe and sound for u