Manager Arsene Wenger has been criticised for the lack of signings at the Emirates this summer, but the 21-year-old defended his boss.
"I'm confident, from what we've seen so far. Hopefully, we can step up a level and use the experience of last season to win the Premier League,” he said.
"If the boss decides to add one or two players then fair enough. But I believe the squad he has is good enough to win the Premier League."
Arsenal finished fourth last season and have only brought in Carl Jenkinson and Gervinho during the off season.