  The two-dimensional nature of graphene makes it an ideal platform to explore
proximity-induced unconventional planar superconductivity and the possibility
of topological superconductivity. Using Green's functions techniques, we study
the transport properties of a finite size ballistic graphene layer placed
between a normal state electrode and a graphene lead with proximity-induced
unconventional superconductivity. Our microscopic description of such a
junction allows us to consider the effect of edge states in the graphene layer
and the imperfect coupling to the electrodes. The tunnel conductance through
the junction and the spectral density of states feature a rich interplay
between graphene's edge states, interface bound states formed at the
graphene-superconductor junction, Fabry-P\'erot resonances originated from the
finite size of the graphene layer, and the characteristic Andreev surface
states of unconventional superconductors. Within our analytical formalism, we
identify the separate contribution from each of these subgap states to the
conductance and density of states. Our results show that graphene provides an
advisable tool to determine experimentally the pairing symmetry of
proximity-induced unconventional superconductivity.
