Chap bailiff evicted on and off? (3)
I believe the answer is:
alf
'chap' is the definition.
(short for Alfred)
'bailiff evicted on and off?' is the wordplay.
'evicted on and off?' indicates alternate letters (letters removed at regular intervals).
The alternating letters of 'bailiff' are 'ALF'.
(Other definitions for alf that I've seen before include "Garnett or Ramsey?" , "- Ramsey, England manager in nineteen sixty six" , "Ramsey starter" , "Sir - Ramsey, England footballer and manager" , "Mr Garnett" .)