Aiming to transform European picture (7)
I believe the answer is:
imagine
'picture' is the definition.
(picture can mean to visualise or imagine)
'aiming to transform european' is the wordplay.
'to transform' is an anagram indicator.
'european' becomes 'E' (abbreviation e.g. EU).
'aiming' anagrammed gives 'imagin'.
'imagin'+'e'='IMAGINE'
(Other definitions for imagine that I've seen before include "Conceive in the mind" , "Picture to oneself" , "Suppose; think up" , "Suspect" , "Suppose; conceive" .)