In favour of Europe, ultimately still time for planning (11)
I believe the answer is:
forethought
'for planning' is the definition.
(I've seen this before)
'in favour of europe ultimately still time' is the wordplay.
'in favour of' becomes 'for' (being for a particular cause).
'ultimately' indicates one should take the final letters.
'still' becomes 'though' ().
'time' becomes 't' (abbreviation).
The final letter of 'europe' is 'e'.
'for'+'e'+'though'+'t'='FORETHOUGHT'
(Other definitions for forethought that I've seen before include "Forward planning" , "provision for the future" , "Advance planning" , "Careful anticipation of the future" .)