### Clue: Deterrent to one who'd steal a broadsheet setter, possibly not Paisley? (5,3)
### Answer: GUARD DOG 
 ### Explanation: Definition: Deterrent to one who'd steal
 [ "Guardian"(the broadsheet newspaper) + DOG(an example of which;possibly, is the setter) ] **minus**(not) "Ian"(Rev. Paisley, Northern Irish leader).