Scott Brown last night voiced his fears a player could get seriously injured by a pitch invader wielding a weapon.
The Celtic captain – who was confronted at Ibrox in April 2017 – has been sickened by the recent series of incidents to hit Scottish football.
“It is a disgrace,” he said. “You can’t have fans run on the park and try to hit players or kick players or kick the ball.
“As Leeann Dempster says, it is not really a fan, it is a hooligan.
“Especially when someone is getting a bottle of Buckfast thrown at them.
“If that hits someone on the head, then the game ends up getting called off.
“You don’t want to see people getting hurt.
“When someone runs up to you, you don’t realise what is happening because it is last minute.
“Lucky enough, they don’t have something to hit you with because that is going to be the next thing – someone is going to run on the park and hit someone with something.
“We have to make sure that doesn’t happen.
“Our football couldn’t be in a better place right now.
“We have done well in the Champions League and the Europa League and we just need to get back to focussing on the football instead of individuals killing the game and making it more about them than it is about the teams.
Celtic manager Neil Lennon meanwhile gave Scotland boss Alex McLeish a boost ahead of the start of the country’s Euro 2020 qualifying campaign.
Scotland kick off away to Kazakhstan on Thursday week before travelling on to play San Marino three days later.
And – contrary to previous expectations – star midfielder Callum McGregor is set to make the trip after making good progress with his calf injury.
“Callum should be all right for Scotland and we are hoping he should be fit for next weekend,” said Lennon.
“I’m happy to encourage that. Not only that, he might need a game!
“My players want to go and they want to play. The core of that group have been excellent for Scotland.
“They have helped make a big improvement, they have had a couple of great recent results that sets them up nicely for these two games.
“I will speak to Alex but our physio Tim Williamson is working with Scotland too so he will keep Alex abreast of everything regarding our boys.”
The ties will, however, come too late for McGregor’s clubmate Ryan Christie who is still recovering from a hamstring problem.