The Parisian is on river in spare time (7)
I believe the answer is:
leisure
'spare time' is the definition.
(I've seen this before)
'the parisian is on river' is the wordplay.
'the parisian' becomes 'le' (definite article in French).
'on' says to put letters next to each other.
'river' becomes 'Ure' (river in Yorkshire).
'le'+'is'+'ure'='LEISURE'
'in' is the link.
(Other definitions for leisure that I've seen before include "may suggest fun and games" , "Free-time" , "R&R" , "Time available for ease and relaxation" , "Use lire (anag)" .)