Tessa returned dear item (5)
I believe the answer is:
asset
'dear item' is the definition.
'asset' can be an answer for 'item' (I have seen 'Item of value' mean 'asset' so perhaps 'item' could also mean 'asset'). I am not certain of the 'dear' bit.
'tessa returned' is the wordplay.
'returned' shows that the letters should be reversed in order.
'tessa' backwards is 'ASSET'.
Can you help me to learn more?
(Other definitions for asset that I've seen before include "Someone or something of value" , "Item conferring advantage" , "Valuable thing" , "Resource; advantage" , "blessing" .)