Inventor having no team backing (6)
I believe the answer is:
edison
'inventor' is the definition.
(Edison is an example)
'no team backing' is the wordplay.
'team' becomes 'side' (I've seen this before).
'backing' shows that the letters should be reversed in order.
'no'+'side'='noside'
'noside' back-to-front is 'EDISON'.
'having' is the link.
(Other definitions for edison that I've seen before include "Thomas --, US?inventor" , "Onside with great American inventor" , "Inventor's" , "Inventor with over 1,000 US patents to his name, d. 1931" , "Thomas Alva ......, great American inventor" .)