When watching Lionel Messi, it can sometimes be difficult to believe that he’s actually human.
The Argentine superstar does stuff on the pitch that needs to be seen to be believed - and even then you’re sometimes left scratching your head wondering what you’ve seen is actually real.
Even some football experts find it hard to describe him.
In 2010, after he had just scored four goals against Arsenal, Arsene Wenger described him as something from a video game.
"He's like a PlayStation player,” he said.
“I think he can take advantage of every mistake you make. Barcelona are a very good side but of course they have Messi who can make the difference at any moment in the game."
At the time, Messi was only 22-years-old and the Frenchman predicted he would become ‘unbelievable’.
Wenger was right.
In fact, Messi has become so ‘unbelievable’ that a journalist asked Brendan Rodgers ahead of Celtic’s clash with Barcelona if the Barcelona forward actually exists.
In the official press conference ahead of Wednesday’s clash, Rodgers was asked: “What do you think would be easier to believe exists, the Loch Ness monster or Lionel Messi?" by one member of the media.
For those of you don’t know, the Loch Ness monster is a mythical creature that was said to reside in Loch Ness in Scotland.
The former Liverpool boss did very well to not burst out laughing, before replying: “It’s hard to believe you asked that question. That's the worst question I've probably been asked. I don't really know so much about the Loch Ness monster, but I know Lionel Messi is a brilliant player."
Check out the awkward exchange below:
Rodgers will be hoping that, like the Loch Ness monster, Messi won’t be seen at Celtic Park on Wednesday night.
Progression through their Champions League group looks extremely unlikely for Celtic. They will need to beat both Barcelona and Manchester City in their remaining two fixtures to stand any chance of reaching the last-16.
However, despite being thrashed 7-0 by the Catalans in the Nou Camp in September, Rodgers believes his side improved because of the result.
"Out there, we made a very bad start to the game, going 1-0 behind, we had the opportunity to equalise, we had threats on counter attacks," he said.
"Obviously we didn't get (score) the penalty and very quickly they get the second goal.
"And once Barcelona - like they have shown many times against better teams than ourselves in all honesty - get that rhythm and that flow in the game, it is very hard to contain it.
"So lots of learning came from that, lots of development both in terms of our team mentality and our game, came from that performance.
"At the time of course, I said it was very disappointing but it hasn't harmed us, if anything, it has only improved us a group and as a squad."