New England Patriots -- Aaron Hernandez Is Not Kid Friendly

The New England Patriots want all Aaron Hernandez jerseys off the backs of kids, and off the market completely -- and they don't care what it costs to make it happen.

The team just announced that fans can exchange their #81 Hernandez jerseys for a brand new Pats jersey ... totally free of charge.

A spokesperson said, "We know that children love wearing their Patriots jerseys, but may not understand why parents don't want them wearing their Hernandez jerseys anymore."

The trade-in offer is further indictment of Hernandez by his former team ... which cut him even before the murder charges were announced.

The only catch to the deal is you have to exchange the jersey on July 6 or 7 at the team's pro shop at Gillette Stadium in Foxboro, Mass.

Non-local Pats fans -- you're stuck with an alleged murderer on your back.