The Inter Milan goalkeeper has previously played at Celtic Park for Udinese.
There is no doubt that the Champions League this season has missed the presence of a regular favourite in the competition, with Celtic not making it to the competition after being knocked out by NK Maribor in qualifying.
In fact they were knocked out twice, losing to Legia Warsaw handsomely before the Polish side were thrown out for fielding an ineligible player.
Celtic have pulled off some infamous results in the Champions League down the years, the majority of which came at Celtic Park.
No footballer across Europe looks forward to an away day in Glasgow as the atmosphere in the Celtic stadium on a Tuesday, Wednesday or Thursday night can be outstanding.
Today, has indeed seen one of Europe's top goalkeepers commend Celtic.
Slovenian stopper Samir Handanovic is well established as one of the top stoppers on the continent and is currently with Italian giants Internazionale.
He played against Celtic when a Udinese player back in 2011, drawing 1-1 both home and away. Today, he answered a question and answer session to Inter fans - and spoke warmly of the Celtic fans and ground:
"I'd like to visit Bilbao, but during games there is never time to see the city. In Scotland there are already, Glasgow is a beautiful city and the stadium of Celtic is very spicy."
Who knows, maybe one day Handanovic could end up keeping sticks for Celtic, who of course he will be facing in the next round of the Europa League.