Carroll was held by police following the incident in the city's busy Bigg Market which left a man needing hospital treatment.
A Northumbria Police spokeswoman: "Shortly after 1.30am today, police received reports of an assault at Blu Bambu, Bigg Market, Newcastle.
"A man suffered head injuries which are not described as life-threatening.
"He was taken to Newcastle General Hospital and later discharged.
"A 20-year-old man was arrested on suspicion of assault occasioning actual bodily harm."
He was arrested in September last year and cautioned after a woman complained she had been assaulted in Pudding Chare, off the Bigg Market.
