Arrived on pitch behind gunners, wary of being shot (6-3)

I believe the answer is:

camera-shy

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But I can't explain it at all! Could you help me understand?

(Other definitions for camera-shy that I've seen before include "Reluctant to be photographed" , "Chaser may be apprehensive of having photo taken - bashful?" , "Unwilling to be photographed" , "Afraid of the lens" .)

I've seen this clue in The Times.

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