The phrase "management believed" is correct and can be used in written English.
It is typically used to introduce a statement or idea that is believed by the management of a company or organization. Example: "Management believed that implementing this new strategy would lead to an increase in profits." In this sentence, the phrase "management believed" indicates that the belief is held by the leadership or decision-makers of the company.
Some in Giants management believed that Reeves took out his frustrations on Wheatley because he wanted to draft Rashaan Salaam instead.
Mr. Reilly said in March that G.M. management believed that the company could not be a global automaker without a strong presence in Europe.
"If Coulter's management believed in the ultimate success of Bexxar, why are they willing to sell the company for $900 million?" said Robert J. Toth Jr., an analyst with Prudential Vector Healthcare.
But the firm's board and management believed that the prospects of the deal were exceedingly cautious about the prospects of reaching a deal, even as they made progress in negotiating with AIA's owner at the time, the American International Group.
Given the natural tendency of BBC current affairs programmes to evolve into versions of Radio 5 Live, it is easy to see why BBC management believed there could be no better replacement for Bill Turnbull, the departing BBC Breakfast presenter, than a young sports commentator.
In the not-so-good old days, my sense is that management believed that the things that interested Beltway insiders were also the things that interested their wider readership; reporters and pundits who cultivated contacts and breathlessly reported the latest twists and turns in the Senator Bomfog scandal were considered the stars.
Such proximity, Cravath's management believes, reinforces esprit de corps.
You need to have 15 members of your squad and the management believing you can win.
The Red Sox management believe that Ramirez does not dislike Boston per se.
But even so, the chain's management believes a remodeling is in order.
But management believes we have a good chance to come back.
