Mitchell maybe tracks down sign (5)
I believe the answer is:
libra
'sign' is the definition.
(sign of the zodiac)
'mitchell maybe tracks down' is the wordplay.
I cannot really understand how this works, but
'maybe' could be 'i' (I've seen this in other clues) and 'i' is located in the answer.
'tracks' could be 'br' and 'br' is located in the answer.
The remaining letters 'la' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for libra that I've seen before include "Zodiacal sign" , "Constellation near Virgo" , "Someone born between September 23 and October 22" , "Zodiac sign of the scales" , "The Scales in astrology" .)