The Dons are upset about a win for this team (7)
I believe the answer is:
swindon
'this team' is the definition.
The definition suggests a singular noun which matches the answer.
'the dons are upset about a win' is the wordplay.
'are upset' indicates anagramming the letters.
'about' indicates putting letters inside.
'dons' anagrammed gives 'sdon'.
'sdon' going around 'win' is 'SWINDON'.
'for' is the link.
Can you help me to learn more?
(Other definitions for swindon that I've seen before include "English town" , "22 [WILTS] town" , "Large Wiltshire railway town" .)