Listen to the full interview above via the Off The Ball Football Show podcast
"I haven't been to Old Trafford in a while so it'll be nice to see some friendly faces. But the main thing for me is for Olympiakos to go through to the quarter-finals".
It's been almost a decade since Roy Carroll left Manchester United. The Northern Ireland international has been at Olympiakos for over two years and the goalkeeper has taken the nomadic route to Greece's most successful club.
After leaving United in 2005, he had spells at West Ham and Derby before joining Danish club Odense. However the fact that his family remained in England made it difficult for him to settle in Denmark, despite excelling on the pitch.
"I was playing in Denmark. I thought I'd come back to England in January because we had a winter break and it was one of those situations where you were playing every week but not seeing your family who were back in England. It was very difficult for me so I decided to move back to England. But it was probably the worst decision of my life because I couldn't get a club," said Carroll, who spent eight months on the sidelines before Greek outfit OFI Crete came in for him in the summer of 2011.
Roy Carroll in his Man United days ©INPHO/Getty Images
Six months later, Olympiakos signed him and he then had a dream debut. After Olympiakos' then-No 1 Balázs Megyeri was sent off late in a Europa League tie against Rubin Kazan, Carroll came off the bench to save a penalty in his first touch for the club.
"It's a dream. It's everybody's dream but it can happen in football. I'm 36-years-old now and I speak to the young Greek players and say anything can happen in football if you keep your head up and keep working hard."
Carroll certainly knows the ups and downs in football. In a recent interview with The Guardian, he spoke about his past battle with alcohol and gambling addictions.
But those days are behind him and he hopes to have "four of five more years" in his career and warned young players about the dangers of veering off the tracks.
"You can be the best player in the world. But if you have a bad attitude, it can take you down. That's what football's all about," said Carroll who turned things around and has been back in the Northern Ireland squad following a six year absence.
