Start with no constraints 

Attackers start with pass from halfway and try to score. 

Defenders need to ideally recover the ball and play out quickly through cones

Add in defensive constraint of lines - encourage compact defending.

Extend: Can add in a recovering defensive player to emphasise importance of delay to defence. 

Defenders - Defend the 'danger zone' . Don't get dragged wide. Don't over-commit outside of the zone. Press and cover e.g 4 press, 3 cover