The atmosphere generated by the fans in Celtic's stadium for our visit was the most impressive I've ever witnessed. The grounds of Liverpool and Manchester United are good and the hostile feeling of playing against Real Madrid in the Bernabeu is also excellent, but the atmosphere against Celtic was the best.
When I was at Porto my team also played in the UEFA Cup final against a Scottish side - but it was Celtic. I've never seen such emotional people. It was unbelievable!
I still love going back to Celtic Park now, whether it's for Celtic or Scotland games, and seeing the atmosphere.
I've been to Wembley before to watch Liverpool and Everton in the FA Cup semi-final in 2012. I saw the atmosphere there, and I didn't ever think women's football would be played in front of those crowds in my time.
When we played at Celtic Park for Bayern in the Champions League it was unbelievable and I think all our players said the same thing afterwards. The atmosphere was just totally unique. I’ve played in lots of big games and stadiums but I’ve never witnessed fans making that much noise in 90 minutes.
I got racist abuse at Liverpool when I played for Watford. Then I played for Liverpool and didn't get it. If I had played for Everton against Liverpool then maybe the Liverpool fans would have racially abused me.
When I was at Liverpool, I asked about Van Dijk when he was at Groningen and then at Celtic. But I was told he wouldn't be for us at the time. Van Dijk could have jumped from Celtic to a Liverpool.
The first thing I remember was going up to Celtic Park to watch Celtic, feeling the full effect of the stadium. When you see the players on the park for the first time, you get sucked in and it's like a dream.
When I played in Germany there was also a good atmosphere in the games but this is better at Celtic.
Celtic had some really good players. Paul McStay is one of the best I've ever played against.
As great as Sadio Mane is, John Barnes is one of the best players I have ever played with - and I've played with a lot of good players at Liverpool.
I didn't sleep with the European Cup but it was in my room! It was just special and I just had to have the cup with me, lifting the cup as Liverpool captain was just the best moment of my life.
It was an amazing experience for me to play at Celtic Park in a big European game. It's a privilege to be a Celtic player, with massive crowds and great fans.
I won in 1992 the UEFA Cup.
I knew off by heart the names of the Real Madrid team that played Liverpool in the European Cup final of 1981.
I could have sat on the bench for a third year but I moved to West Brom from Liverpool to play. I love Liverpool and I've played a lot of games in my career so if I wanted to have a comfy life, I could have stayed at Liverpool.