Clem may be out to get us power (6)
I believe the answer is:
muscle
'us power' is the definition.
'muscle' can be an answer for 'power' (I've seen this before). I am not sure about the 'us' bit.
'clem may be out to' is the wordplay.
'may be' is an anagram indicator.
'out' means one lot of letters goes inside another.
'to' becomes 'us' (I can't explain this - if you can you should believe this answer much more).
'clem' is an anagram of 'mcle'.
'mcle' placed around 'us' is 'MUSCLE'.
'get' is the link.
Can you help me to learn more?
(Other definitions for muscle that I've seen before include "Beef" , "Body tissue that affects movement" , "meat" , "Might, perhaps" , "Eg, biceps" .)