Former Arsenal vice-chairman David Dein has warned the Gunners that they must consider those wishing to invest in the club if they have realistic hopes of winning the Premiership title again.
Dein fell out with the Arsenal board following his backing of American billionaire Stan Kroenke ahead of a potential takeover of the North London club.
The falling out led to Dein leaving the club, which in turn destabilised the club and in particular Arsene Wenger and the now departed Thierry Henry.
Dein has now sold his stake in Arsenal to Uzbek billionaire Alisher Usmanov for £75million, but he seems to still be firmly interested in being involved in the club again in the future.
"We can all live in a comfortable, closeted world where we're happy for a football club to be making £20million or £30million a year," Dein told the News of the World.
"But this sport is now a global game - and those figure are small beer.
"I'm not talking about this year, or even next year - but in three years' time I firmly believe Arsenal will be blown out of the water unless the board open the door to new investment.
"If Arsenal are to have a realistic chance of winning the Premier League in the future, then the club has to accept they will need a huge injection of money.
"Everybody has seen what Chelsea have done and they are there for the long term.
"Arsenal say they are in great shape today but we're not talking about today.
"We are talking about the future. Unless the current board realise you cannot judge things by this year's standards or even next year's, then I'm afraid we're going to get left behind by others - and that would break my heart."
Goal.com - England - Dein Warns Arsenal To Consider Investment