Stiliyan Petrov has told Celtic and Rangers players that they will be in 'hell' if they suffer defeat in the first derby of the season.
The Bulgarian insists that losing the game means you have months of extra pressure on you until the next time you play your rivals, with no game like it in football.The ex-Hoops midfielder spent seven years at Celtic Park and played in the famous 6-2 victory in 2002 under Martin O'Neill.
And he admits that playing for Celtic made him realise how important it was to win every single game you play, because the fans don't allow anything less.
He told Sky Sports: "You're not allowed to lose Old Firm games. If you lose, you have to wait until the next time you play them and in that period, you're in hell. "The.
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