I'm leaving rupees for old Asian (5)

I believe the answer is:

tatar

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'old asian' is the definition.
'Tatar' can be an answer for 'asian' (Tatar is an example). I am not sure about the 'old' bit.

'i'm leaving rupees' is the wordplay.
'i'm leaving' becomes 'tata' (you might say ta-ta or goodbye when leaving).
'rupees' becomes 'r' (abbreviation for rupees).
'tata'+'r'='TATAR'

'for' acts as a link.

Can you help me to learn more?

(Other definitions for tatar that I've seen before include "Russian" , "Old warrior" , "One of a people from Russia and Ukraine" , "Asian" , "Turkic language" .)

I've seen this clue in The Guardian.

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