Central server (server 1) plays ball to goalkeeper when they have advanced far enough
Goalkeeper passes ball back to the server 1
Server 1 then plays the ball out wide to Server 2 who plays first time ball for the goalkeeper to cut out or deal with the shot from Server 1
NOTES:
When working with younger goalkeepers get the server that follows in to play the shot first time, so they cannot generate as much power
Coaching points
Goalkeeper to get far enough out for dealing with the pass and watch the goalkeepers movement pattern, this should be diagonal.
Goalkeeper should use the time as the ball is travelling to get into position
If the ball is reachable for the goalkeeper they should try and stop the striker getting across them. It is more difficult for a striker to score if they are outside the posts
Progression
Introduce an extra striker to 'shut the back door'