New series about university in supply again (7)
I believe the answer is:
reissue
'supply again' is the definition.
('issue' can be a synonym for 'supply' so perhaps 'reissue' is OK for 'supply again')
'new series about university' is the wordplay.
'new' indicates anagramming the letters.
'about' means one lot of letters goes inside another.
'university' becomes 'u'.
'series' is an anagram of 'reisse'.
'reisse' going around 'u' is 'REISSUE'.
'in' acts as a link.
(Other definitions for reissue that I've seen before include "A second impression, perhaps" , "Old record" , "New edition of book" , "Put out yet again" , "Circulate a second time" .)