Arsenal officials believes the club will suffer a similar decline that Manchester United have suffered if Arsene Wenger decides to quit the club, reports the Daily Telegraph.
Wenger has already verbally agreed a two-year extension with the club, but following Arsenal's 6-0 defeat to Chelsea, he has decided to wait until the end of the season before making a final decision on his future.
Various reports have claimed that Wenger has brought his position at Arsenal under serious consideration as calls from fans to quit grow louder with every match. But officials at the Emirates Stadium believe Wenger's exit could spark a dramatic decline in the style of Manchester United.
Sir Alex Ferguson's retirement after a 26-year spell in charge at Old Trafford has subsequently left to Manchester United's demise as they sit seventh in the table, losing 10 games and look set to finish outside of the top four for the first time in Premier League history.
New manager David Moyes has come in for heavy criticism as the Ferguson effect drags Manchester United into mediocrity. Looking towards Old Trafford in fear, Arsenal officials are being forced to draw up contingency plans should Wenger perform a shock U-turn.
Arsenal owner Stan Kroenke and chief executive remain confident that Wenger will sign a new contract, but understand that Arsenal will be left in a similar position to Manchester United if he departs.
Even if Wenger does decide to commit to a new contract, Arsenal officials have learned their lesson and will continue to plan for life without their long-standing manager.
Potential replacements include the likes of Roberto Martinez and Brendan Rodgers. Arsenal hope that by the time Wenger calls time on his Arsenal career, the aforementioned pair would have added to their CVs.