Former Liverpool defender, Jamie Carragher, has said Mikel Arteta will be furious ahead of the clash with Paris Saint-Germain after his team slipped up against Crystal Palace.
The Gunners took the lead twice during a dramatic first half on Wednesday night.
But they ended up drawing 2-2 with Oliver Glasners side, leaving their grip on second place less secure.
Artetas men have now managed just one win in their last four Premier League fixtures.
Mathematically, five other teams could still catch Arsenal if results dont go their way.