Weak team member one transferred by coach? (9)
I believe the answer is:
passenger
I believe this clue is a double definition.
'weak team member' is the first definition.
(somebody doing less work than other team members)
'one transferred by coach?' is the second definition.
(a passenger on a coach)
(Other definitions for passenger that I've seen before include "burden to the team" , "One's driven" , "Rider" , "One on a train perhaps" , "One on team doing little effective work" .)