Blue attacking up the pitch; B1 does the roll ball.
B2 passes to B3 (who is running onto the ball).
B3 runs slightly across the pitch to drag Red 3 across. B4 starts straight before ...
... cutting behind B3 (who turns so they can see B4 the whole time) and receiving a short pass ...
... and running through the gap between R2 and R3
Variation:
If R3 & R4 see what's coming and cover it, B3 can dummy the pass to B4 and pass to B5 running a short line outside R4