Welcome when sporting cane, cap etc (10)
I believe the answer is:
acceptance
'welcome' is the definition.
(thesaurus)
'sporting cane cap etc' is the wordplay.
'sporting' is an anagram indicator.
'cane'+'cap'+'etc'='canecapetc'
'canecapetc' with letters rearranged gives 'ACCEPTANCE'.
'when' is the link.
(Other definitions for acceptance that I've seen before include "Toleration" , "Modified Cape accent gets approval" , "Ability to tolerate" , "Favourable reception" , "Recognition" .)