Say Johnson close to limit (7)
I believe the answer is:
confine
'to limit' is the definition.
(synonyms)
'say johnson close' is the wordplay.
I cannot quite see how this works, but
'close' could be 'on' (I've seen this in other clues) and 'on' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for confine that I've seen before include "Keep within limits" , "Incarcerate" , "Imprison" , "Shut in" , "Limit" .)