Crossword Genius

Friend round to study has everything prepared (3,5)

Ross

I believe the answer is:

all ready

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'prepared' is the definition.
(thesaurus)

'friend round to study has everything' is the wordplay.
I cannot quite understand how this works, but
'study' could be 'read' ('read' can be a synonym of 'study') and 'read' is found within the answer.
'friend' could be 'ally' (I've seen this before) and 'ally' is found in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Independent.
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