Can't find problem, having nothing on European friend (10)
I believe the answer is:
confidante
'friend' is the definition.
(I know that confidante is a type of confidant)
'can't find problem having nothing on european' is the wordplay.
I cannot really understand how this works, but
an anagram of 'find' is 'nfid' which is within the answer.
'nothing' could be 'o' (O resembles 0) and 'o' is located in the answer.
'can't' could be 'cant' and 'cant' is located in the remaining letters.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for confidante that I've seen before include "Someone to consult" , "Trusted female" , "Female entrusted with secrets" , "Female one entrusts with secrets" , "Intimate" .)