Arsenal boss Arsene Wenger insists the club will survive despite losing striker Robin van Persie to rivals Manchester United.
Van Persie quit Arsenal for United on Friday after signing a four-year deal at Old Trafford.
Wenger admits he can understand that suppporters are hurt at the loss of van Persie, but he is adamant they can still fulfil their ambitions this season.
"Time heals all things and of course at the moment people are hurt, which I understand, but what is important for us is to focus on the season in front of us," admitted Wenger.
"Players have gone, life goes on and the football club is 125 years old. Other big players have left this club and we have always gone from season to season in a strong way.
"We have lost world-class players before and we always survived.
"It is a massive challenge to replace Van Persie, so we have to be even more of a team and work even more together to compensate that loss.
"We have the quality to deal with the problem we have, and at the end of the day I can talk and talk and talk but we can only show it on the pitch now.
"We have bought Lukas Podolski, Olivier Giroud and Lukas Podolski and if we need more players then we will invest.
"I believe we have what we need to be ambitious and to play our game."