Big win for Patriots safety Patrick Chung ... the New England DB just cut a deal in his cocaine case -- and he will NOT have to go to jail despite a felony drug charge.
Court officials tell TMZ Sports Chung and prosecutors made an agreement Monday in which Chung's charge will be dropped if he meets several requirements.
Officials say Chung's got to keep his nose clean for 2 years, he has to submit to random periodic drug testing and he has to complete 40 hours of community service.
It's a sweet deal for the 32-year-old New England defensive back .