Apprentice finding means of transport with ease, say (7)
I believe the answer is:
trainee
'apprentice' is the definition.
(someone undergoing training)
'means of transport with ease say' is the wordplay.
'means of transport' becomes 'train' (I've seen this before).
'with' says to put letters next to each other.
'say' indicates a 'sounds like' (homophone) clue.
'ease' sounds like 'ee'.
'train'+'ee'='TRAINEE'
'finding' is the link.
(Other definitions for trainee that I've seen before include "One undergoing instruction" , "one needs to practice" , "As pupil" , "Aintree (anag.)" , "One taking instruction" .)