Learner in badly managed Oxford college (8)
I believe the answer is:
magdalen
'oxford college' is the definition.
'learner in badly managed' is the wordplay.
'learner' becomes 'l'.
'in' indicates putting letters inside.
'badly' indicates an anagram.
'managed' with letters rearranged gives 'magdaen'.
'l' going inside 'magdaen' is 'MAGDALEN'.
(Other definitions for magdalen that I've seen before include "Mary - Oxford college" , "Mary . . . . . . . ., follower of Christ" , "Mary ........, companion to Christ" , "Infamous laundries" .)