  We revisit the work of K. Goeke, M. Harvey, F. Gr\"ummer, and J. N. Urbano
(Phys. Rev. {\bf D37}, 754 (1988)) who considered a chiral model for the
nucleon based on the linear sigma model with scalar-isoscalar scalar-isovector
mesons coupled to quarks and solved using the coherent-pair approximation. In
this way the quantum pion field can be treated in a non-perturbative fashion.
In this work we review this model and the coherent pair approximation
correcting several errors in the earlier work. We minimize the expectation
value of the chiral hamiltonian in the ansatz coherent-pair ground state
configuration and solve the resulting equations for nucleon quantum numbers. We
calculate the canonical set of nucleon observables and compare with the
Hedgehog model and experiment. Using the corrected equations yield slightly
different values for nucleon observables but do not correct the large virial
deviation in the $\pi$-nucleon coupling. Our results therefore do not
significantly alter the conclusions of Goeke, et al..
