Start to reel in touchy follower without restraint (6)
I believe the answer is:
freely
'without restraint' is the definition.
(I've seen this in another clue)
'start to reel in touchy follower' is the wordplay.
'start to' suggests taking the first letters.
'in' is an insertion indicator.
'touchy follower' becomes 'feely' (reference to the phrase 'touchy-feely').
The first letter of 'reel' is 'r'.
'r' inserted within 'feely' is 'FREELY'.
(Other definitions for freely that I've seen before include "in copious quantities" , "easily" , "Without compulsion" , "Without restriction or payment" , "Without let or hindrance" .)