Sheldon Richardson’s NFL career began smoothly with the New York Jets, until off-the-field trouble and locker-room conflict precipitated his eventual departure.

Guided by some important gains in maturity, Richardson has found a niche two stops later in Minnesota. The Vikings visit his old team the Jets this weekend, but Richardson isn’t willing to acknowledge he’s harboring a grudge.

He says his return to MetLife Stadium will be “all business.”