Poor police practice is a pattern with men unfortunately (10)
I believe the answer is:
entrapment
'poor police practice' is the definition.
The definition suggests a singular noun which matches the answer.
'pattern with men unfortunately' is the wordplay.
'with' says to put letters next to each other.
'unfortunately' is an anagram indicator (a bad or unfortunate spelling).
'pattern' put after 'men' is 'menpattern'.
'menpattern' is an anagram of 'ENTRAPMENT'.
'is a' acts as a link.
Can you help me to learn more?
(Other definitions for entrapment that I've seen before include "Tricking (of someone) into crime" , "(Act of) tricking someone into getting caught" , "Pet remnant (anag.)" , "Sting" .)