Fouled aplenty? Referee may award this (7)
I believe the answer is:
penalty
'referee may award this' is the definition.
The definition suggests a singular noun which matches the answer.
'fouled aplenty?' is the wordplay.
'fouled' indicates an anagram.
'aplenty' is an anagram of 'PENALTY'.
Can you help me to learn more?
(Other definitions for penalty that I've seen before include "Punishment; fine" , "Perhaps fine" , "kick by footballer" , "Punishment for error (in game)" , "Punishment eg for foul" .)