Gathering for golf in Europe, perhaps (10)
I believe the answer is:
contingent
'gathering' is the definition.
(contingent is a kind of gathering)
'golf in europe perhaps' is the wordplay.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' indicates putting letters inside.
'europe perhaps' becomes 'continent' (europe is a kind of continent).
'g' inserted inside 'continent' is 'CONTINGENT'.
'for' acts as a link.
(Other definitions for contingent that I've seen before include "army unit" , "Some soldiers" , "not necessary" , "uncertain" , "party" .)