Fouled aplenty? Here's decision! (7)
I believe the answer is:
penalty
'decision' is the definition.
(thesaurus)
'fouled aplenty?' is the wordplay.
'fouled' indicates anagramming the letters.
'aplenty' is an anagram of 'PENALTY'.
'here's' acts as a link.
(Other definitions for penalty that I've seen before include "Spot kick" , "Punishment eg for foul" , "Perhaps fine" , "Disadvantage imposed" , "Fine - handicap" .)