Celtic's campaign in Group C of the UEFA Champions League has been every bit as tough as people predicted when the draw was made in August.

Although finding themselves bottom of the group, creditable draws against Manchester City and Borussia Monchengladbach have inspired hope for Hoops supporters that a win can be found in the remaining two games. Both are almighty tasks, away to Man City and home to Barcelona.

That match against Barcelona next week seems particularly daunting given they dished out a 7-0 demolition to Rodgers' boys at the Nou Camp just over two months ago.

As always at Celtic Park however, history provides inspiration and fans thoughts will drift to 2012 when an almighty upset against Barcelona sent shockwaves around Europe.

Here are five things Celtic must do to repeat history against the Catalan giants...

Show aggression in pressing and defending

Football Soccer - Borussia Monchengladbach v Celtic - UEFA Champions League Group Stage - Group C - Stadion im Borussia-Park, Monchengladbach, Germany - 1/11/16
Celtic's Erik Sviatchenko looks dejected
Reuters / Wolfgang Rattay
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Celtic arguably showed Barcelona far too much respect in the Nou Camp earlier this season; standing off Messi and company, not committing to challenges and not being eager enough to press the relentless attacks.

This campaign in Europe has been a learning process for the Bhoys and this aspect of their has definitely improved from that opening fixture, most notably at home to Manchester City. That night Rodgers' team took no prisoners in chasing down and competing with players who pundits said were far beyond the ability of the Scottish champions. The same is required next Wednesday.

If the likes of Erik Sviatchenko, Scott Brown and Mikael Lustig can make their physical presence count across the pitch then it'd be a big step towards securing a result.

Draw inspiration from the crowd

CELTIC FANS

Let's face it, on paper Celtic shouldn't be close to Barcelona or Man City or any number of elite European sides that have come to Celtic Park and not come away with victory over the last 15 years. One of the key factors on these occasions is the influence of the 60,000 Celtic fans that congregate with dreams and songs to sing.

The argument is often made that this intimidates the opposition but these sides often play in front of such numbers. A much more likely benefit of such support is the fearlessness and confidence it inspires in the home side.

The passion shown in the 3-3 draw with Manchester City will live long in the memory of anyone who attended. If Celtic can tap into that once again then anything is possible.

Be clinical

Football - Celtic v FC Barcelona - UEFA Champions League Group G - Celtic Park, Glasgow, Scotland - 7/11/12 Celtic's Tony Watt scores their second goal Mandatory Credit: Action Images / Lee Smith Livepic

On that famous night in November 2012 Barcelona dominated Celtic. They had the majority of possession, more shots on goal, more passes and more corners. None of it mattered when Tony Watt slipped the ball past Valdes and blew the roof off of Celtic Park.

There's no doubting that whatever happens next week that the Bhoys will have at least one massive opportunity to score. It even happened in the 7-0 loss earlier this season, Moussa Dembele missing a penalty when it was still 1-0. This time those chances must be converted or it could be another long night.

 Feed Dembele

Moussa Dembele has been a superstar for Celtic this season, never more so than when he announced his arrival on the European football scene with a sensational double against Manchester City.

His touch and volley home to put the Bhoys 3-2 up that night showed the sort of ability that Celtic fans haven't seen at this level since the days of Larsson and Sutton. The young Frenchman will be very eager to put that penalty miss in the Nou Camp behind him and continue to raise his ever increasing profile.

Scott Sinclair, Tom Rogic and Scott Brown will all play pivotal roles in supplying the striker. If the Bhoys can effectively involve Dembele in the final third, everyone knows that he can do the business when called upon.

La Gran Muralla?

Britain Football Soccer - Celtic v Borussia Monchengladbach - UEFA Champions League Group Stage - Group C - Celtic Park, Glasgow, Scotland  - 19/10/16
Celtic's Craig Gordon makes a save from Borussia Monchengladbach's Jonas Hofmann 
Action Images via Reuters / Lee Smith
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Fraser Forster was so pivotal for Celtic against Barcelona in 2012 that the Spanish pressed gave him the nickname 'La Gran Muralla' or to you and I, The Great Wall.

Forster broke records at Celtic Park so it's perhaps unfair to compare Celtic's current goalkeepers to the English giant. Craig Gordon will however likely have to turn in one massive performance next Wednesday if the Bhoys are to get a result.

The Scotland international has shown on many occasions that he has the shot stopping ability to keep out efforts destined for all corners of the net. Despite conceding 3 goals against Guardiola's City he kept out as many, busy in his first taste of Champions League football.

To keep out Messi, Neymar, Suarez and the rest next week is quite the task but he's the man Celtic turn to.