Fellow produced a computer-aided design to train mice (8)
I believe the answer is:
Here is my best explanation:
'fellow' is the definition.
(I've seen this before)
'a computer-aided design to train mice' is the subsidiary indication.
I cannot really understand how this works, but
'a' is present in the answer.
an anagram of 'mice' is 'emic' which is present in the answer.
The remaining letters 'cad' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'produced' is the link.
(Other definitions for academic that I've seen before include "fellow", "Donnish", "Unimportant", "Scholastic", "A person studying", "Not expected to produce any practical result", "Teacher has", "Scholarly - unrealistic", "scholar" and "Well-read".)