will escape further punishment for the on-field tantrum he displayed after being sent off at Fulham, the FA have confirmed.
As Sportsmail revealed earlier today, the Manchester United striker has escaped further action for remonstrating with the referee, his tardiness in leaving the pitch and his petulant swing at the corner flag as he headed for thetunnel.
Rooney was handed an automatic one-match ban for being shown two yellow cards in United's defeat at Craven Cottage on Saturday.
Referee Phil Dowd has confirmed he was not sworn at by the striker.
The FA will write to Rooney however to issue him with a formal warning about his conduct after he punched the corner flag while leaving the pitch. An FA spokesman said: 'We have clarified with Phil Dowd that there was no abuse from the player after he was dismissed.
'In relation to the incident when he punched the corner flag, the referee did not see that and we have written to Wayne Rooney
reminding him of his responsibilities.'
It means Rooney will only be suspended for one game, United's clash with Aston Villa at Old Trafford on April 5.
Rooney, 23, felt the sending off was harsh, and he was supported in that view after the match by United boss Sir Alex Ferguson.
His conduct was reminiscent of Javier Mascherano's rant at Steve Bennett at Old Trafford a year ago this month.
The Argentina midfielder was charged with improper conduct, fined£15,000 and given an extra two-match ban after refusing to leave thepitch promptly during his side's 3-0 defeat.
Sources also indicate that George McCartney's sending off inn Sunderland's 1-0 defeat to Manchester City will be overturned.
McCartney was shown a straight red card by referee Steve Tanner inthe 15th minute of Sunday's match for 'denying a goalscoring opportunity' after tuggingthe shoulder of Shaun Wright-Phillips on the edge of the area.
However, replays suggested there was minimal contact while Wright-Phillips was not in full control of the ball and Sunderland are set to win their appeal.