Mohammed -- (boxer) (3)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
ali
This clue is a double definition.
'mohammed' is the first definition.
(the boxer Mohammed Ali)
'boxer' is the second definition.
(Muhammad Ali)
(Other definitions for ali that I've seen before include "Egyptian name" , "Former boxing champion" , "Muhammad ___ (or MacGraw?)" , "Muhammad or Baba?" , "Champion of ring" .)