The former Croatia international, a defender or midfielder, played against Celtic for Liverpool in the 2002/03 UEFA Cup, during Martin O'Neill's side's march to the final before losing to Porto.
The Battle of Britain clash had the English giants billed as favourites but a 1-1 draw in Glasgow was followed up by Alan Thompson and John Hartson goals securing a brilliant win at Anfield.
Biscan came on as a substitute at Celtic Park before being unused in Liverpool, but was mesmerised by the atmopshere in the east end of Glasgow.
Speaking to BOYLE Sports, who offer Champions League odds, he said: “I've heard the stories (about signing) but I was never close to being there at Celtic. But the stories are incredible.
“All I can say is I played once against Celtic in their stadium and that's one of the best, if not the best atmosphere that I've ever experienced.
“I was there playing in the UEFA Cup against Celtic. It was just unbelievable.
“It lived up to what everybody had said about it, the crowd, the noise was just incredible. I can only compare it with the atmosphere and the noise when we played in Turkey against Galatasaray.
“It’s probably down to those two, and Celtic might be the best.”