  Given the phenomenological success of the Nambu-Jona-Lasinio model in
describing the meson physics in the low energy limit, it is tempting to find
the fully relativistically structured nucleon solution in the same model under
the similar approximation employed in the mesonic sector. To achieve this goal
we need to solve a relativistic Faddeev equation. The factorizability of the
two-body T-matrix reduces the three-body Faddeev equation to a tractable
two-body Bethe-Salpeter equation. The reduced equation is then solved
numerically. Our result indicates that the nucleon consists of three loosely
bound constituent quarks.
