Retire due to ill health, maybe eventually like one’s teacher? (4,2,4,3)
I believe the answer is:
take to ones bed
'retire due to ill health maybe eventually' is the definition.
I can't tell whether this defines the answer.
'like one's teacher?' is the wordplay.
'like' becomes 'take to' (take to can mean to like or grow fond of).
'teacher?' becomes 'BEd' (holder of a BEd, Bachelor of Education degree).
'taketo'+'ones'+'bed'='TAKE TO ONES BED'
Can you help me to learn more?
(Other definitions for take to ones bed that I've seen before include "Retire when sick" , "Retire due to illness" , "Retire ill" .)