Fellow turning to move his head? (3)
I believe the answer is:
nod
'move his head?' is the definition.
'nod' can be an answer for 'move' (nodding is a kind of moving). I'm not certain of the 'his head?' bit.
'fellow turning' is the wordplay.
'fellow' becomes 'don' (both can mean an academic).
'turning' says the letters should be written in reverse.
'don' written backwards gives 'NOD'.
'to' is the link.
Can you help me to learn more?
(Other definitions for nod that I've seen before include "Agree non-verbally" , "Asleep in the land" , "'A . . . is as good as a wink to a blind horse'" , "positive sign" , "Show assent" .)