Will come after, you understand (6)
I believe the answer is:
follow
'understand' is the definition.
(thesaurus)
'will come after' is the wordplay.
I cannot quite understand how this works, but
'will' could be 'll' (contracted form, as in 'he'll' - 'he will') and 'll' is present in the answer.
This explanation may well be incorrect...
'you' is the link.
Can you help me to learn more?
(Other definitions for follow that I've seen before include "'____ and don't dilly-dally on the way'" , "Ensue" , "dog" , "Succeed; go after" , "Come next" .)