Totally regret travelling north for football event (5)
I believe the answer is:
euros
'totally' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'regret travelling north for football event' is the wordplay.
'regret' becomes 'rue' (to rue something is to regret it).
'travelling north' says the letters should be written in reverse (in a down clue, letters go up).
'for' says to put letters next to each other.
'football event' becomes 'os' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'rue' back-to-front is 'eur'.
'eur'+'os'='EUROS'
Can you help me to learn more?
(Other definitions for euros that I've seen before include "currency in Greece" , "French coins and notes" , "Units of modern European currency" , "money" , "Rouse (anag.)" .)