Supply a learner driver that’s qualified (11)
I believe the answer is:
provisional
'qualified' is the definition.
(thesaurus)
'supply a learner driver' is the wordplay.
'supply' becomes 'provision' (provisioning is a kind of supplying).
'learner driver' becomes 'l' (I've seen this in other clues).
'provision'+'a'+'l'='PROVISIONAL'
'that's' is the link.
(Other definitions for provisional that I've seen before include "Pending subsequent decision" , "Temporary - viral poison (anag)" , "Temporary, interim" , "Temporary - conditional" .)