One cleric prepared to make friends again (9)
I believe the answer is:
reconcile
'make friends again' is the definition.
'one cleric prepared' is the wordplay.
'prepared' is an anagram indicator.
'one'+'cleric'='onecleric'
'onecleric' is an anagram of 'RECONCILE'.
'to' acts as a link.
(Other definitions for reconcile that I've seen before include "Renew friendship" , "Puccini opera" , "accommodate" , "Be on friendly terms again" , "Settle (a quarrel)" .)