Possession game 3 v 2 or 3 v 4

A small sided pitch is divided into two halves. Two teams of 5 players each are placed

with numerical advantage 3 v 2 in the build up lower area.

When all 3 players in the lower half of the pitch have touched the ball,

they can try to finish the move inside the upper half through a run without the ball of a defender.

At the same time a forward of the defending team must run back,

to create numerical advantage 4 v 3 and  to recover back the possession.

The possession team is outnumbered during the attacking phase (3 v 4),

but in numerical advantage inside the defense half (2 v 1).