The Gunners trail Bayern Munich by two goals following the first leg of their last 16 clash, but the French duo believe they are capable of turning the tie around in Germany
Arsene Wenger's side have a mountain to climb in the tie having been defeated 2-0 by the Bundesliga leaders in the first leg, with goals from Toni Kroos and Thomas Muller seeing off the Gunners at the Emirates Stadium.
But Sagna believes his team-mates have it in them to defy the odds and win again at the Aliianz Arena, having claimed a 2-0 win at the home of the German giants last season, although he is adamant Arsenal must score first.
He told L'Equipe: "If we score the first goal, sure they will think we can do it like last year. I only hope we will have the chance to play 11 against 11 to the end."
Giroud, meanwhile, believes there is nothing stopping the north Londoners from claiming what would be a famous triumph in Germany, with Bayern having only suffered three defeats since the start of 2013.
The France international striker said: "I already thought last year [that Arsenal could go through]. We lost the first leg 3-1 and it was even harder. So why not [another win at Bayern] this year?"