John Winterton, 26, was last seen about 3am on Wednesday 18 August on Sale Road.
There has been no transactions om his bank cards since Tuesday and his phone signal was last pinged in northern moor at 6.17am on Wednesday morning.
John is described as a white male, around 5 ft 8 to 6 ft tall, of medium build with brown short hair.
He was last seen wearing khaki green work pants with a rip on the right leg, dark brown Stanley work boots, white top with writing, a navy blue hoodless jacket and a black cap.
He has a tattoo on his right forearm of a clock and roses and a tattoo on his left upper arm of a tiger.
Officers are becoming increasingly concerned for John and want to make sure he is safe and well.
Anyone with information about John whereabouts is asked to contact police on 0161 856 6033.