The president-elect’s son called Boris Epshteyn a “good human being” and said he hoped the reports were false—but if not, the aide would be done in Trumpworld.

President-elect Donald Trump’s son Eric sent out a clear “warning shot” to one of their own allies, Republican strategist Boris Epshteyn, amidst allegations he tried selling access to Trump to the highest bidder.

Eric Greitens, who has expressed interest in joining the Trump administration, signed a declaration last week recounting a Nov. 7 conversation with adviser Boris Epshteyn.

Epshteyn—who has denied any alleged wrongdoing—has reportedly clashed with people in Trump’s orbit, including transition co-chair Howard Lutnick and Elon Musk.