  We report a discovery of a large-scale bent radio jet in the merging galaxy
cluster Abell 514 ($z = 0.071$). The radio emission originates from the two
radio lobes of the AGN located near the center of the southern subcluster and
extends towards the southern outskirts with multiple bends. Its peculiar
morphology is characterized by a $400$-kpc ``bridge'', a $300$-kpc ``arc'', and
a $400$-kpc ``tail'', which together contribute to its largest linear size of
$\sim0.7$ Mpc. We find that both the flux and spectral features of the emission
change with the distance from the AGN. Also, the ``bridge'' presents a $60\%$
polarized radio emission, which coincided with an X-ray cold front. Based on
our multi-wavelength observations, we propose that A514 presents a clear case
for the redistribution of an old AGN plasma due to merger-driven gas motions.
We support our interpretation with idealized cluster merger simulations
employing a passive tracer field to represent cosmic-ray electrons and find
that merger-driven motions can efficiently create a cloud of these particles in
the cluster outskirts, which later can be re-accelerated by the cluster merger
shock and produce radio relics.
