Manager repeatedly uses such language! (6)
I believe the answer is:
german
'language' is the definition.
(German is a language)
'manager repeatedly uses' is the wordplay.
'manager repeatedly' means two replacements for 'manager'.
'uses' indicates a hidden word (the answer is used as part of the clue).
'GERMAN' can be found hidden inside 'manager manager'.
'such' acts as a link.
(Other definitions for german that I've seen before include "Nationality of citizen of Bonn" , "Helmut?" , "Goethe's language" , "Composer, English? Yes" , "Middle European, for example" .)