Sydney police charge man over king hit

A middle-aged man who allegedly punched a man in the back of the head outside a pub in Sydney's inner west has been charged.

Police say the 49-year-old followed the 48-year-old victim outside a pub in Rozelle late one night in mid December before attacking him.

The injured man was taken to the Royal Prince Alfred Hospital.

On Wednesday police arrested the 49-year-old and charged him with assault.

Bail was granted with strict conditions and he's due before Balmain Local Court in late January.