Crossword Genius

Urge football team to drop point (4)

Ross

I believe the answer is:

spur

I'm a little stuck... Click here to teach me more about this clue!

'urge' is the definition.
(I've seen this in another clue)

'football team to drop point' is the wordplay.
I cannot really see how this works, but
'point' could be 's' (South) and 's' is found in the answer.
The remaining letters 'pur' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for spur that I've seen before include "Spike on a horse-rider's boot" , "Goad - branch line" , "outcrop" , "This provokes sudden movement!" , "Egg on or goad as horseman might" .)

I've seen this clue in The Guardian.
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