Blue side of satchel searched (7)
I believe the answer is:
chelsea
'blue side' is the definition.
'chelsea' can be an answer for 'side' (I've seen this before). I am unsure of the 'blue' bit.
'of satchel searched' is the wordplay.
'of' indicates the answer is hidden within the clue.
'CHELSEA' is hidden in the letters of 'satchel searched'.
Can you help me to learn more?
(Other definitions for chelsea that I've seen before include "Side" , "London district and football club" , "bun offered" , "The Blues of Stamford Bridge" , "place of buns" .)