Easy to understand addict attending pre-season game? (4-8)
I believe the answer is:
user-friendly
'easy to understand' is the definition.
(I've seen this before)
'addict attending pre-season game?' is the wordplay.
'addict' becomes 'user' (I've seen this before).
'attending' is a charade indicator (letters next to each other).
'pre-season game?' becomes 'friendly' (type of non-competition football match ).
'user'+'friendly'='USER-FRIENDLY'
(Other definitions for user-friendly that I've seen before include "Easy to understand or manipulate" , "Easy to operate" , "Easily picked up" .)