Not sure Man U fans are famous for causing trouble. Shouldn't be a problem.
Another story.
The year they won the title, they beat us 2-1 Anfield. I was there. Poisonous atmosphere, quite a few of them got on the Kop and when they scored they celebrated and got a shoeing.
Anyway, I used to go to games by train or coach back then. I was on the train back to Euston and made the acquaintance of the so called cockney reds. I was young and naive back then which explained my wearing a t shirt which had a picture of the recently released hostage from the Middle East, Terry Waite. With the the simple speech bubble which had him saying "What? Man Utd still haven't won the title?"
As I went to the buffet car, I was stopped by a guy two carriages away and quickly surrounded. At first I thought it was a bit of banter. Then I was suckered punched to the side of the head, and the one who seemed to be ringleader, produced a knife and a lighter. He told me to remove it or he'd cut me and set light to it with me in it. I was also taking sly digs to kidneys and head from his cohorts. I removed it and they tried to set fire to it in the aisle but it wouldn't go up. I turned to go, and he grabbed me and told me he'd find me at Euston and stab me.
I returned to my seat where I already had welts and swelling to my face. My girlfriend at time, was more concerned about the fact I hadn't got her Diet Coke! Worried about Euston, I decided to alight the train at Watford Junction. I wasn't prepared to call this lots bluff on the threat.
I held back as I alighted to ensure they didn't see me. As the train pulled out, they saw me and started making the usual gestures and I decided to find my bravery and gave it the big 'un from the platform. Suddenly the train shuddered like it was stopping. I've never run so fast in my life, I was like Allan Wells - well I couldn't be Linford
Luckily the train wasn't stopping and I got home in one piece. Well with a badly swollen ear and swelling round nose and eyes.
Of course that was 23 years ago odd so it's not relevant today perhaps. I just told it to show that I'm a big gobshites when it comes to real football hooligans!