Recover from concerning stroke (6)
I believe the answer is:
recoup
'recover' is the definition.
(synonyms)
'concerning stroke' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'stroke' becomes 'coup' (I have seen 'Brilliant stroke ' mean 'coup' so perhaps 'stroke' could also mean 'coup').
're'+'coup'='RECOUP'
'from' is the link.
(Other definitions for recoup that I've seen before include "Get back one's losses" , "Reimburse or compensate" , "Get back again, say losses (6)" , "Regain (expenditure)" , "make good one's losses" .)