Former Manchester United player Danny Simpson was held by police over claims he was involved in an iron bar attack.
The 27-year-old, who now plays for QPR, is accused of confronting a man outside his Withington home after he suspected him of stealing his mobile phone in a nightclub.
He was arrested on suspicion of assault on Tuesday and later bailed pending further enquiries.
Police say the alleged victim, aged 34, suffered head injuries and is recovering in hospital.
– Greater Manchester Police
Police were called at 8.15am on Tuesday 4 February 2014 to reports of an altercation outside a house on Princess Road near to the junction with Whitchurch Road in Withington.
Officers attended and discovered an 34-year-old man with head injuries. He was taken to hospital where his condition is stable.
An 27-year-old man has been arrested on suspicion of Section 18 assault and bailed pending further enquiries.