Fake restriction? Not initially (9)
I believe the answer is:
imitation
'fake' is the definition.
(imitation leather for example)
'restriction? not initially' is the wordplay.
'restriction?' becomes 'limitation' ('limitation' can be a synonym of 'restriction').
'not initially' means to remove the first letter.
'limitation' with its first letter taken away is 'IMITATION'.
(Other definitions for imitation that I've seen before include "Copy; copying" , "Bogus" , "Mock -- ersatz" , "It's said to be the sincerest form of flattery" , "created by the impressionist" .)