Chances covering international match will be quirks (8)
I believe the answer is:
oddities
'be quirks' is the definition.
(I've seen this before)
'chances covering international match' is the wordplay.
'chances' becomes 'odds' (the odds of something happening).
'covering' indicates putting letters inside.
'international' becomes 'i' (abbreviation eg in IMF).
'match' becomes 'tie' (tie can mean a sporting fixture).
'i'+'tie'='itie'
'odds' going around 'itie' is 'ODDITIES'.
'will' acts as a link.
(Other definitions for oddities that I've seen before include "Unusual persons or things" , "Quirks" , "Curiosities" , "Peculiarities" , "So tidied up for strange people or things" .)