Troy Deeney said it best when he accused Arsenal's players of lacking "cojones" following their 2-1 defeat against Watford on Saturday.

Despite going a goal ahead through Per Mertesacker's header, the Gunners capitulated with 20 minutes to go and ended up conceding twice.

Deeney's penalty sparked an unlikely comeback before Tom Cleverley fired emphatically past Petr Cech in the 92nd minute.

Arsenal's performance perfectly summed up their lack of fight when the chips are down, as Deeney explained in a post-match interview on BT Sport.

"I've heard [Arsene] Wenger's already blaming [the decision] as the reason why they lost," he said. "There's a reason why they lost and it wasn't because of one penalty.

"I'll have to watch what I say. It's [having] a bit of cojones, a bit of nuts.

"Whenever I play Arsenal, I'll go up and think, 'Let me whack the first one and see who wants it'. I know I'm not technically gifted like they are, but if you want to fight with me, I'm gonna beat you."

Arsenal's players will need to man up when they travel to face Red Star Belgrade in Serbia in the Europa League on Thursday night.

Rajko Mitic Stadium, also known as Marakana, holds 55,000 fans and is one of the most intimidating stadiums to play at in world football.

And the worst part of playing there? Walking through the players' tunnel.

A video uploaded on YouTube two years ago shows what it's like walking from the dressing rooms to the pitch before Red Star's 'Eternal Derby' vs FK Partizan and it looks genuinely terrifying.

The walls are lined with armed police and graffiti, while the deafening noise made by the fans inside the stadium booms through the tunnel. Check it out.

Arsenal's players should be scared, but if there's one way they can prove they have 'cojones', it's by leaving the pitch and walking back through the tunnel as winners.

That's what Jack Wilshere will expect from his teammates anyway, with the 25-year-old saying on Thursday: "As a player if your attitude is questioned, it's horrible.

"I look around this team and you can't question our character. People try to put us down, they always have. I don't think the comments were justified.

"When we look back at the game we look back at ourselves and what we did wrong. I don't think we can look back and question our character."