Attractive, I appreciate that man (6)
I believe the answer is:
taking
'attractive' is the definition.
(similar in meaning)
'i appreciate that man' is the wordplay.
'i appreciate that' becomes 'ta' (informal way of saying thank you).
'man' becomes 'king' (king is a kind of man).
'ta'+'king'='TAKING'
(Other definitions for taking that I've seen before include "Seizing, appropriating" , "Accepting" , "Stealing; charming" , "acceptance" , "Receiving; renting" .)