The Sun says Evans insisted "I didn't do it" after he was accused of rape.
The 19-year-old Northern Ireland international protested his innocence in a series of calls to close friends.
He rang round after a girl accused him of raping her at the club's Christmas party.
The player was arrested after presenting himself to cops on Tuesday.
A pal said last night: "Jonny is genuinely bemused and astonished by the events of the last 48 hours. He is determined to clear his name as quickly as possible."