Individual touring clubs long ago (4)
I believe the answer is:
once
'long ago' is the definition.
(I've seen this before)
'individual touring clubs' is the wordplay.
'individual' becomes 'one' (**).
'touring' is an insertion indicator (touring can mean going round).
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'one' going around 'c' is 'ONCE'.
(Other definitions for once that I've seen before include "A single time" , "Just as a single occurrence" , "Formerly; as soon as" , "Formerly - not repeated" , "... upon a time for the storyteller" .)