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The defending champions travel to north London looking to take a first leg lead back to Catalonia and we are backing Barca to triumph but without keeping a clean sheet

These two sides meet in the Champions League once more with the Emirates Stadium having already witnessed some epic clashes between the Gunners and the Catalans.

The Premier League giants and the Blaugrana were drawn against each other in the knockout stages in both 2010 and 2011. On both occasions Barca dominated but failed to leave the Emirates with a win before triumphing handsomely in the return leg.

bet365 have announced that they will be running their risk-free in-play bet offer on this high-profile match. Simply place any pre-match bet on the game and get a risk-free bet once the match kicks off to the same amount, up to £50 per player. Place an in-play bet after the game has kicked off and if it loses, bet365 will refund the stake directly into your account as cash. Terms and conditions can be found here.

Tuesday night sees another encounter between two of the continent's most accomplished sides with Barcelona aiming to stay on track to become the first team ever to successfully defend the Champions League.

Certainly the bookmakers feel Arsenal will be a minor obstacle in the Catalans' path with bet365 offering Luis Enrique's men at 1/8 (1.16) to qualify for the quarter-finals and at 4/6 (1.66) to win in north London.

Arsenal are priced at 17/4 (5.25) to claim a first leg win as they did back in 2011, while the draw can be backed at 16/5 (4.20).

In all five Champions League meetings between these two sides (including the 2006 final) both teams to score has paid out pretty comfortably and a repeat at the Emirates is offered at 4/6 (1.66).

That price alone will not overly appeal to many, yet the odds of 21/10 (3.10) for Barcelona to win and both teams to score look much more healthy, with the statistics backing up the selection. The side from Catalonia are on a supreme run, 32 matches unbeaten, although in recent matches they have been conceding goals.

This bet has paid out in seven of their last 10 fixtures, with the likes of Las Palmas, Sporting Gijon and Malaga all able to score against Barca in the last month.

Scoring, however, has not prevented defeat and while the Gunners can find the back of the net at home as they have done in 14 of their last 15 Champions League games at the Emirates, it is unlikely to be enough to prevent a defeat.

Barcelona to win and both teams to score for a 1pt stake at 23/10 (3.10) with bet365