"Antonio takes these allegations very seriously," Rosenhaus told ESPN, according to Mike Florio of Pro Football Talk. "He is a loving father (of) five children, including a daughter. I, myself, am a father and I have two children, two daughters, that I love very much, along with my wife.
"I wouldn't be doing this interview if I didn't believe Antonio. These allegations are false. He denies every one of them. I'm very confident that his legal team has facts that will prove this."
Rosenhaus said the accusations leveled by Brown's former trainer Britney Taylor are a "money grab" and called for the public to "allow the situation to play itself out."
"I'm advising him to let the truth come out," Rosenhaus said. "I'm advising him to concentrate on football. I'm advising him to cooperate with the Patriots, with the NFL, with the NFLPA. Antonio and I both strongly believe that these allegations are very serious.
"In no way do we condone any type of illegal conduct, misbehavior. None of that happened here. This is a money grab. I'll repeat this, this is a money grab. In my opinion, this is a money grab."
In a statement Tuesday, Brown's lawyer also said the All-Pro wideout "refuses to be the victim of what he believes to be a money grab."
A federal lawsuit filed Tuesday stated Brown sexually assaulted Taylor on three separate occasions in 2017 and 2018.