Listening intently, a student attached to King's (3,4)
I believe the answer is:
Here is my best explanation:
'listening intently' is the definition.
(I've seen this before)
'a student attached to king's' is the subsidiary indication.
'student' becomes 'l'.
'attached to' is a charade indicator (letters next to each other).
'king's' becomes 'lears' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
(Other definitions for all ears that I've seen before include "description of cornfield?", "Listening attentively", ".Listening very intently", "Very attentive", "Very alert" and "Being very attentive".)