Attraction or repulsion of concert if game rearranged (8,5)

I believe the answer is:

magnetic force

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'attraction' is the definition.
(magnetic force is a kind of attraction)

'concert if game rearranged' is the wordplay.
'rearranged' indicates an anagram.
'concert'+'if'+'game'='concertifgame'
'concertifgame' is an anagram of 'MAGNETIC FORCE'.

'or repulsion of' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.

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