Mikel Arteta is facing the biggest challenge of his Arsenal reign in Paris. And for some members of his Arsenal squad, they are also playing for their long-term futures at the club. Arsenal trail French champions Paris Saint Germain 1-0 from the first leg last week and face a huge uphill battle to turn the tie around. PSG have gained a reputation for being even stronger at the Parc des Princes so Arteta’s men face a daunting task and yet, after beating Real Madrid in both legs, it is not an