The only way Arsenal can win the Premier League title this season is by producing a "miracle, says former striker Kanu Nwankwo.
The Gunners need to be patient with the Unai Emery, who succeeded Arsene Wenger after 22 years at the helm.
"If it happens and they win the league, it's a miracle," the Nigerian - who was part of the undefeated 'Invincibles' side of 2003-04 - told BBC Sport.
"It takes time for the newcomers, the new signings, to adapt. We have to allow time for him to bring his own style and the way he wants to play."
Kanu added: "For the new manager, it's going to be a very big challenge; the fans want them to perform in the league in his first year, which is always difficult for a new coach.
"It's a very big club - coming into a big club you need a trophy, so if you don't win the league, you need to win the others. It's hard, but that's what you expect of a coach of that stature and a big club."