Former European politician with time to spare (6)
I believe the answer is:
exempt
'spare' is the definition.
(thesaurus)
'former european politician with time' is the wordplay.
'former' becomes 'ex' (prefix meaning former or onetime).
'european' becomes 'E' (abbreviation e.g. EU).
'politician' becomes 'MP' (Member of Parliament).
'with' means one lot of letters go next to another.
'time' becomes 't' (abbreviation).
'ex'+'e'+'mp'+'t'='EXEMPT'
'to' is the link.
(Other definitions for exempt that I've seen before include "Immune - absolve" , "Free (from, eg, taxes)" , "Not subject to an obligation" , "Free from, eg, tax" , "Grant immunity" .)