Celtic defender Lee Naylor knows keeping Lionel Messi quiet will be crucial to their hopes of pulling off a Champions League miracle on Tuesday.
Naylor will line up against Messi expecting another stern test after the Argentinian forward put Barcelona in the driving seat for a place in the quarter-finals.
Ronaldinho, Thierry Henry and Deco were among the galaxy of Barca stars which lit up the first leg in Glasgow, but it was 20-year-old Messi who shone brightest, scoring twice to give the Spanish giants a 3-2 victory.
Celtic travel to the Nou Camp looking to shut down Barca's star-studded attack and wipe out their first-leg deficit, although Naylor knows it will be a tall order.
Naylor said: "I think he has shown that everywhere he has been, at club level and for his country, that he is an amazing talent.
"He didn't take me on as much as I thought he would. He was quiet in the first half but obviously he scored twice and showed his class."
Celtic are still to win an away game in the Champions League and they have to beat Barca to stand any chance of progressing to the quarter finals.
Last season the Bhoys almost reached the last eight, losing 1-0 to AC Milan after taking the eventual winners to extra-time, and Naylor is hopeful of upsetting the odds in the Nou Camp.
"It's a game of football, so why not?" he said.
"It's a very, very big ask, we all know that and we don't hide away from it. But anything can happen and we will be giving 100 per cent out there."
Celtic midfielder Scott Brown is likely to return after missing the first leg through suspension and the former Hibernian player is eager to fulfil a life-long ambition.
"It's every young boy's dream to play at the Nou Camp in front of a full house," he said.
"Hopefully we can go over there and try to score a goal or two and see how it goes."