Any degenerates get involved with Zulu banker? (7)
I believe the answer is:
Here is my best explanation:
'banker?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'any degenerates get involved with zulu' is the wordplay.
'degenerates' indicates anagramming the letters (I've seen 'degenerate' mean this).
'involved with' is an anagram indicator (involved can mean confusing or complex).
'zulu' becomes 'z' (phonetic alphabet: alpha, bravo, charlie etc.).
'any' is an anagram of 'yan'.
'get' mixed up with 'z' makes 'gtze'.
(Other definitions for yangtze that I've seen before include "China's longest river now known as Chang Jiang", "Chinese river; get zany (anag.)", "big river", "here (together with China Girl)?", "Asia's longest river", "Longest river in China", "(Eastern) river", "Major Chinese river", "Longest Asian river" and "Longest river of Asia".)