Brown has made numerous changes since arriving at Pittodrie last December and he hopes to continue to rejuvenate the squad before the close of the summer transfer window at the end of August.
But despite a chronic lack of creativity up front, the manager says he cannot replace both of the Dons' departed flair players.
He said: "We've got the budget left for one player. We might have to get down on our knees and beg the chairman to give us a bit more support to get further reinforcements.
"We can only replace the players we lost. We brought in (Youl) Mawene for (Zander) Diamond, we brought in (Isaac) Osbourne for (Paul) Hartley. It was like for like.
"We've lost two forward players in (Chris) Maguire and (Sone) Aluko and we have the budget to get at least one forward player.
"We're looking conscientiously to get that player."
Source: Team Talk
Source: Team Talk