Controller to remunerate teacher (9)
I believe the answer is:
paymaster
'controller' is the definition.
(thesaurus)
'remunerate teacher' is the wordplay.
'remunerate' becomes 'pay' (I've seen this in another clue).
'teacher' becomes 'master' (I've seen this before).
'pay'+'master'='PAYMASTER'
'to' acts as a link.
(Other definitions for paymaster that I've seen before include "Official dealing with wages" , "funding source" , "I hand out bread" , "Salary official" , "Government official" .)