Don't worry, he won't be banged up for long. Bulgaria is gagging to join the EU and the last thing they want is this sort of draconian miscarriage of justice. There will be a review or an appeal and he'll probably be on his way home by the end of the year.
I have had the misfortune to be in the same grid square abroad with England football fans on a number of occasions. Banging them up for 18 years on spurious evidence seems like good drills to me.
He'll be out soon, as has been stated, selling his story to The Mirror (a Liverpool fan would never sell his story to The Scum, right?) and having an interesting tale to tell down t'pub.
Lastly, when I go abroad to, ahem, less...developed countries than ours I behave myself even more impeccably than usual. Football takes otherwise unworldly young men to places where they simply don't comprehend that things are different, especially the sensibilities of foreign heavily-armed paramilitary police forces.
Georgiev, father of a two-year-old son, lost a 5cm piece of skull in the attack. He is likely to have permanent brain damage.
Lets not all jump the gun based on what the papers say to get a good story. There are loads of people who confess to crimes in order to muddy the water in criminal trials. Remember he has not made a confession to any one in authority. Lets say one of the London bombers is in the dock and 4 of his his pals confess to the police in order to get him off? How can a court ever convict someone if this were to happen, based on the beyond the reasonable doubt concept. Who would be stupid enough to confess to a crime just to save someone else? If he was so concerned then why has he not got his arrse across there and put his hands up. Lets not let the newspapers swing our opinions and thoughts as the try to do with the sheep of the UK everyday.