### Clue: Just after leg and jacket for creature (4)
### Answer: ONCE 
 ### Explanation: Definition: Just after
 ON(in cricket, the leg side;the side of the field to the left of a right-handed batsman as he faces the bowler ) **plus**(and) **the outermost letters of**(jacket for) "creature ".
Defn. and Answer: As in "call me just after/once you arrive".