Greek and another European secure trouble-free route to top job? (6,4)
I believe the answer is:
greasy pole
'route to top job?' is the definition.
(as in climbing the greasy pole)
'greek and another european secure trouble-free' is the wordplay.
I cannot quite see how this works, but
'greek' could be 'gr' (abbreviation for Greek) and 'gr' is found in the answer.
'another' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
(Another definition for greasy pole that I've seen is " hard way to the top".)