The Gunners won their preseason friendly 1-0 thanks to Bukayo Saka's goal.
In a statement to Arsenal's official website, Nwaneri said, "I think it's a good start from the team. We're ready to keep pushing and training hard."
He added that the team's performance was tough but necessary for getting fit during preseason.
Nwaneri also praised the team's new signings, saying they have strengthened the team and made them more competitive.
He looked forward to the new players joining the team and building together.
