So be it; able and ready to be controlled (8)
I believe the answer is:
amenable
'ready to be controlled' is the definition.
I can't judge whether this defines the answer.
'so be it able' is the wordplay.
'so be it' becomes 'amen' (I've seen this before).
'amen'+'able'='AMENABLE'
'and' is the link.
Can you help me to learn more?
(Other definitions for amenable that I've seen before include "Willing to be guided, being nameable" , "Willing to yield or be influenced" , "Nameable as being subject to the law" , "Flexible, agreeable" , "Open to suggestions" .)