Simplicity of a net I've got out (7)
I believe the answer is:
naivete
'simplicity' is the definition.
(I've seen this before)
'a net i've got out' is the wordplay.
'got out' indicates an anagram (the letters get out of order).
'a'+'net'+'ive'='anetive'
'anetive' is an anagram of 'NAIVETE'.
'of' acts as a link.
(Other definitions for naivete that I've seen before include "Being green" , "Ingenuosity" , "Quality of innocent gullibility" , "Ingenuousness" , "Greenness" .)