Free Turkish commander back in Moroccan port (6)
I believe the answer is:
agadir
'moroccan port' is the definition.
(I've seen this before)
'free turkish commander back' is the wordplay.
'free' becomes 'rid' ('rid' can be a synonym of 'free'**).
'turkish commander' becomes 'aga' (I've seen this before).
'back' shows that the letters should be reversed in order.
'rid'+'aga'='ridaga'
'ridaga' backwards is 'AGADIR'.
'in' is the link.
(Other definitions for agadir that I've seen before include "in Africa" , "North African port" , "Port in south-west Morocco" , "African city" , "Moroccan seaport" .)