COMMENT By Dominic Toner

Celtic host Barcelona on Wednesday night in the Champions League group stages and will start the game as huge underdogs.

The Scottish giants are currently bottom of their group and are unlikely to reach the knockout stages of the competition, but are still chasing a third-placed finish to qualify for the Europa League.

Celtic will be looking for revenge on Wednesday against Barcelona after suffering a crushing 7-0 defeat at the Camp Nou in the reverse fixture.

Football Insider previews why Brendan Rodgers’ side can pull off an upset against the Spanish giants.

Draw on Manchester City performance

Celtic have already shown in Europe this season that they can compete against the best, proving their qualities in the 3-3 home draw against Manchester City.

The Bhoys gave a great account of themselves against the English giants and led the game on three separate occasions.

They were encouraged by an extremely loud Celtic Park and they are set to play their part against Barcelona.

Celtic were aggressive and attack-minded against a City team that wanted to dominate possession, something that could unease Luis Enrique’s Barcelona team.

Barcelona are regarded as the best in possession in the world, but Celtic can draw great belief on the attacking approach shown against Man City.

Barcelona are vulnerable in defence

Barcelona are well recognised for their attacking trio of Lionel Messi, Neymar and Luis Suarez, but do have several weaknesses in their defence.

Gerard Pique and Javier Mascherano are likely to start the game at centre-back, with youngster Samuel Umtiti sidelined with injury.

The centre-back pairing are comfortable in possession, but there are doubts about their qualities defending.

Jordi Alba and Sergi Roberto are likely to occupy the full-back positions and are more attack-minded, something that Celtic winger Scott Sinclair could take advantage of on the break.

Man City defeated Barcelona 3-1 in their last European match and proved that they’re not invincible.

Dembele is a big game player

Celtic forward Moussa Dembele is the one player that could strike fear into the Barcelona side.

The 20-year-old is emerging as one of the hottest properties in Europe and will be keen to show his worth in the Champions League.

He has scored a remarkable 16 goals in just 25 games since he moved to Celtic Park in the summer and has excelled in the club’s big matches this season.

Dembele scored a phenomenal hat-trick in the 5-1 victory against Rangers in the league and also scored the decisive goal in the narrow 1-0 win over their Old Firm rivals in the Scottish League Cup semi-finals.

He has scored three goals already in the Champions League this campaign, including the equaliser in the 1-1 draw against Gladbach.

In other Celtic news, Joe Miller has claimed that the club’s player has the world at his feet.