Alexis Sanchez says Arsenal “lack self-belief” to win the Premier League this season.
The Gunners slipped up in their bid to close the gap on leaders Leicester on Wednesday, when they were beaten 2-1 by Swansea.
“I think we can win the league with the players we have, but we lack a certain hunger,” Sanchez told Directv Sports.
“We need to step out onto the pitch as if we’re already 1-0 up.”
He added: “I remember a game against Manchester United last year. The lads looked hungry for silverware as we took to the pitch.
“We crushed them in the first 20 minutes and went 3-0 up. We were hungry and brimming with confidence that day.”
Arsenal have just three wins from 11 games in all competitions and are third in the league, six points behind the Foxes.
Gunners manager Arsene Wenger also said his side’s loss of form “looks a bit” like a confidence issue.
“I am worrying about our results,” he said. “We don’t dream. We have to be realistic and come back to what we do well… the basics.
“The players are very down but we have to respond. We have to focus on our job and remind ourselves that we have some quality as well.”