The Football Association has revealed Leicester keeper Ian Walker will not face action for tussling with a fan.
Walker shoved Andrew Price to the ground after the Foxes fan ran onto the pitch to confront him during the 5-0 thrashing against Aston Villa.
Leicester have since issued a life ban to Price, who has apologised.
"Saturday's incident was clearly unacceptable and we do not want to see any repeat," said FA spokesman Adrian Bevington.
"We understand the individual who entered the pitch was arrested and we now expect action to be taken against him, which will see him banned from entering all football stadiums.
"Thankfully, these kind of incidents are very rare in our stadiums.
"However, all fans should note that entering the field of play is an offence and can lead to criminal convictions," he told the FA's website.
The lifetime suspension against Price will start with immediate effect, despite his full apology for his actions at the Walkers Stadium.
"The club notes the apology made by Mr Price but given the seriousness of the incident had no option but to apply a life ban," said a Leicester statement.
"Steps will be taken to ensure player safety won't be further compromised.
"Of paramount importance now is that everyone connected with the club remains totally united in our aim to maintain Premier status."
Price apologised for his actions, telling the Leicester Mercury newspaper: "I am so sorry. I'm gutted about it. It was a stupid thing to do and I regret it.
"I was surprised I got that far and found myself standing in front of Ian Walker in the penalty box.
"When I got to him I said I didn't think he was fit to be a Premiership player. He told me to get lost basically."
Walker defended his actions, saying: "He came up to me and was abusive and aggressive.
"I tried to push him away and attempted to restrain him while stewards came onto the pitch.
"Our supporters have every right to make their feelings known about our performance and I can understand their frustration, but I don't think acting in this way is going to help the team."
Leicester boss Micky Adams leapt to Walker's defence.
Adams said: "I hope no action is taken against Ian. First of all the fan shouldn't have been on the pitch."