Free to bring in Republican that's inexperienced (7)
I believe the answer is:
untried
'inexperienced' is the definition.
('untried' can be similar in meaning to 'inexperienced')
'free to bring in republican' is the wordplay.
'free' becomes 'untie' (I've seen this before).
'to' becomes 'd' (I can't explain this - if you can you should give a lot more credence to this answer).
'bring in' is an insertion indicator.
'republican' becomes 'r' (abbreviation).
'untie'+'d'='untied'
'untied' enclosing 'r' is 'UNTRIED'.
'that's' is the link.
Can you help me to learn more?
(Other definitions for untried that I've seen before include "Yet to be taken to court" , "novel" , "inexperienced" , "Intrude (anag.)" , "Intrude, being not yet tested" .)