Jermaine Jones is DANGEROUS ... and David Charvet is scared the soccer superstar is going to physically hurt him -- the actor's attorney tells TMZ Sports.
We broke the story last month ... Charvet claims the former Team USA soccer star sent him threatening messages featuring photos of his assault rifle ... all because J.J. believed Charvet banged his wife and ruined his marriage.
Charvet adamantly denied he slept with Jones' wife -- and begged the court for a restraining order against the athlete.