Stranger on fire: Reg needs putting out (9)

I believe the answer is:

foreigner

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'putting out' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'stranger on fire reg' is the wordplay.
'stranger' is an anagram indicator.
'on'+'fire'+'reg'='onfirereg'
'onfirereg' with letters rearranged gives 'FOREIGNER'.

'needs' acts as a link.

Can you help me to learn more?

(Other definitions for foreigner that I've seen before include "One from abroad" , "asylum seeker?" , "chauvinist holds in contempt" , "Alien" , "Stranger, outsider" .)

I've seen this clue in The Sun.

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