Person who'll use and provide further modern tech (6)
I believe the answer is:
addict
'person who'll use' is the definition.
(person who'll use drugs)
'provide further modern tech' is the wordplay.
'provide further' becomes 'add'.
'modern tech' becomes 'ict' (information and communication technology).
'add'+'ict'='ADDICT'
'and' is the link.
(Other definitions for addict that I've seen before include "One hooked on drugs" , "Person who compulsively uses drugs" , "One hooked on something" , "Devoted fan" , "Fanatical devotee" .)