Fooled by belt pinching Nike design (5,2)
I believe the answer is:
taken in
'fooled' is the definition.
('take in' can be a synonym of 'fool')
'belt pinching nike design' is the wordplay.
'belt' becomes 'tan' (I've seen this before).
'pinching' means one lot of letters goes inside another (taking inside).
'design' indicates an anagram.
'nike' with letters rearranged gives 'keni'.
'tan' going around 'keni' is 'TAKEN IN'.
'by' is the link.
(Other definitions for taken in that I've seen before include "Deceived; accepted" , "Admitted - received - deceived" , "Deceived - given hospitality" , "hoodwinked" , "Conned" .)