  Using measured branching fraction of the decay $J/\psi \rightarrow\eta
Y(2175))\rightarrow\eta\phi f_0(980)\rightarrow\eta\phi\pi^+\pi^{-}$ from the
BESIII experiment, we estimate branching fraction of $J/\psi \rightarrow\eta
Y(2175))\rightarrow\eta\phi f_0(980)\rightarrow\eta\phi\eta\pi^{0}$ decay,
which proceeds via the $f_0(980)$-$a_0^0(980)$ mixing and the $\pi^0$-$\eta$
mixing. The branching fraction is predicted to be about $O(10^{-6})$, which can
be accessed with $10^{10}$ $J/\psi$ events collected at the BESIII. The decay
is dominated by the contribution from $f_0(980)$-$a_0^0(980)$ mixing. We find
that the interference between the amplitudes due to $f_0(980)$-$a_0^0(980)$
mixing and that due to $\pi^0$-$\eta$ mixing is destructive. The branching
fraction can be decreased by about $10\%$ owing to the interference effect. We
also study the $\eta\pi^0$ mass squared spectrum, and find that a narrow peak
due to the $f_0(980)$-$a_0^0(980)$ mixing in the $\eta\pi^0$ mass squared
spectrum should be observed. The observation of this decay in experiment will
be helpful to determine the $f_0(980)$-$a_0^0(980)$ mixing intensity and get
information about the structures of the light scalar mesons.
