Arsenal staff fear job losses despite the club winning the Premier League title for the first time in 22 years and reaching the Champions League final, according to Daily Mail Sport.
Daily Mail Sport understands that US consultancy firm Boston Consulting Group, known as BCG, has been carrying out a review at the champions for the last three months.
BCG managing director Jean-Paul Petranca is believed to be leading the review, which some claim has created a split within the club's offices despite a stunning season in north London.

Arsenal insiders insist BCG are there to help the club grow the business, capitalise on their success and ensure a sustained period of high performance.
However, sources have disclosed that many staff members believe job cuts are inevitable, and that there is a perception, and an anger, that the football side of the business will not be impacted.
Who is leading the review
Petranca has been reporting to Arsenal chief executive Richard Garlick. According to BCG's website, he has "more than 20 years' experience advising senior leaders in the UK and internationally on strategy, transformation, and organizational performance".
Boston Consulting Group is one of the world's largest management consulting firms, advising businesses on strategy, transformation and organisational change.
Arsenal have refused to comment, but it is thought that making efficiencies is part of Petranca's remit.
Nervousness in the commercial department
There is thought to be particular nervousness within the commercial department, with some staff struggling to see the logic behind any cuts, should they take place.
In the summer, that side of the business lost its boss, Juliet Slot, who departed after almost five years with the club, a period which saw record-breaking revenues.
There is a view that any restructuring in that area would be short-sighted, given Arsenal, like many other clubs, rely on driving income to comply with Premier League and UEFA spending rules. The Premier League and UEFA both enforce profit and sustainability rules, commonly known as financial fair play, which limit how much clubs can spend relative to their revenue. Many believe the emphasis should instead be on servicing relationships with existing partners while searching for new sponsorships.
Staff anger over football department
One member of staff, speaking anonymously, said: "Obviously everyone was delighted at the success of the team last year. But it has not gone unnoticed that the football department, which has extended recently, appears immune to any changes.
"It doesn't feel right that, given the amount of money spent there, normal people with bills and mortgages to pay feel under threat.
"You would think that it's a great place to be at the moment but that's just not the case. There's also an anger that, should there be cuts, they will be made by someone from outside the business rather than your own boss."

