Last season Wigan, then under the guidance of now Everton boss Roberto Martinez, beat Manchester City in one of the great Wembley upsets.

However, Wigan's Cup heroics couldn't prevent them being relegated from the Premier League to the second-tier Championship.

Arsenal remained among the elite but the pressure is on the London club to end a trophy drought dating back to their 2005 FA Cup triumph, with a 3-0 league defeat by Everton last weekend that threatens their Champions League qualification hopes adding to the tension enveloping Arsene Wenger's side.

Wigan have already knocked top flight Crystal Palace, Cardiff and Manchester City and Rosler reckons his team are now in a "no lose" situation.

"We're going to Wembley and we're meeting a top team in the Premier League," he said.

"We are the massive underdog but we have presented ourselves so far in a very, very good way. We've made our supporters proud and we're going to Wembley; we can't lose, we only can win.

"Everybody highlighted the fact Arsenal now really have to go for the FA Cup and win the FA Cup. Their own players said that this week and obviously that puts a little bit of extra pressure on Arsenal," added the German, who made his name in English football as a Manchester City striker.

"My players are used to playing against Premier League sides and they are missing that this season. For them it was always like 'come on, I can still do it' and here we are in the semis," Rosler explained.

But while Wigan can call on collective joyful memories of Wembley, Rosler knows what it's like to lose at the home of English football, having overseen west London side Brentford's defeat in last season's third tier League One play-off final.

"Last year I walked out with Brentford and I found out that Wembley is not a nice place when you're not a winner," Rosler said.

"It took me a few weeks to overcome the disappointment and I want to taste success as well."