Crossword Genius

Give further support to, having got home (4,5)

Ross

I believe the answer is:

back again

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

'having got home' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'give further support' is the wordplay.
I cannot really see how this works, but
'further' could be 'again' (I've seen this before) and 'again' is found within the answer.
'support' could be 'back' (to back is to support or endorse) and 'back' is found within the answer.
No letters remain.
This explanation may well be incorrect...

'to' is the link.

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I've seen this clue in the Evening Standard.
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