Drop chin. Legs diagonal with his. Right hand grabs his wrist, left arm wraps around and grabs his bicep. Step back with left foot while you chop out the back of his knee with your right to drop him. If he holds onto your neck, both hands on the mat to prevent him rolling you. Step over with your right leg and drag your heal into his hip. Frame on his neck with your right arm and support it with your left hand. Push down on his neck while you lean forward to release his grip. S-mount arm bar.