Manchester United forward Wayne Rooney could face FA action after threatening one of his Twitter followers.
Rooney, 25, signed up to the social networking site in late April and has already accumulated more than 570,000 followers.
But he did not take kindly to an abusive tweet on Tuesday and suggested a meeting at Manchester United's training ground.
"I'll put u asleep within 10 seconds," Rooney posted, before adding: "hope u turn up if u don't gonna tell everyone ur scared u little nit. I'll be waiting."
Rooney then tried to defuse the situation, tweeting: "Haha bit of banter and people go nuts chill all people."
The account of the follower who taunted the former Everton player was later deleted.
Rooney could join the likes of West Ham's Carlton Cole and Liverpool's Ryan Babel in being fined for inappropriate comments on Twitter this season.
Rooney was recently charged by the Football Association and banned for two matches after he swore into a television camera just after scoring a goal for Manchester United in a 4-2 win at West Ham in April.