Australian learns to change football club magazine (7)
I believe the answer is:
arsenal
'magazine' is the definition.
(both can mean an ammunition store)
'australian learns to change' is the wordplay.
'australian' becomes 'A'.
'to change' indicates an anagram.
'learns' with letters rearranged gives 'rsenal'.
'a'+'rsenal'='ARSENAL'
'football club' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for arsenal that I've seen before include "favoured by some football supporters" , "Football team - magazine" , "weapons are kept here" , "Store of guns and ammunition" , "Armoury - London football club" .)