  In this paper, we examine the cosmological viability of a slow moving
galileon field in a potential. The Lagrangian $\cal{L}$ $
=-\frac{1}{2}g^{\mu\nu}\pi_{;\mu}\pi_{;\nu}
+\frac{G^{\mu\nu}}{2M^2}\pi_{;\mu}\pi_{;\nu}$ respects the galileon symmetry in
curved space time.
  We carry out detailed investigations of the underlying dynamics of this
Lagrangian with Einstein-Hilbert term and a potential. We demonstrate that the
model can give rise to a viable ghost free late time acceleration of universe.
Furthermore we study the cosmological perturbation of the model and see that
the model gives different BBN constraints at early times. We also carry out the
observational analysis of the model and use observational data from growth,
Type Ia Supernovae (SNIa), Baryon Acoustic Oscillations (BAO) and Cosmic
Microwave Background (CMB) to constrain the parameters of the theory.
