Ace boxer takes tea with politician (5)
I believe the answer is:
champ
'ace boxer' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'tea with politician' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'with' says to put letters next to each other.
'politician' becomes 'MP' (Member of Parliament).
'cha'+'mp'='CHAMP'
'takes' acts as a link.
Can you help me to learn more?
(Other definitions for champ that I've seen before include "Gnaw; winner (abbr.)" , "Crush" , "boxer who is top dog?" , "Munch loudly - the winner!" , "Top sportsman" .)