Nearly all soccer team appearing amongst international set (6)
I believe the answer is:
intent
'set' is the definition.
(I've seen this before)
'nearly all soccer team appearing amongst international' is the wordplay.
I cannot really understand how this works, but
'international' could be 'int' (abbreviation for international) and 'int' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for intent that I've seen before include "Keen" , "set" , "Focused" , "Concentrating on a particular purpose" , "Purpose, design" .)