  The diquark and nucleon are studied in a non-local NJL model. We solve the
relativistic Faddeev equation and compare the results with the ordinary NJL
model. Although the model is quark confining, it is not diquark confining in
the rainbow-ladder approximation. We show that the off-shell contribution to
the diquark $T$ matrix is crucial for the structure of the nucleon: without its
inclusion the attraction in the scalar channel is too weak to form a three-body
bound state.
