  The lens candidate RXJ 0921+4529 consists of two z_s=1.66 quasar separated by
6."93 with an H band magnitude difference of \Delta m=1.39. The lens appears to
be a z_l=0.31 X-ray cluster, including a m_H=18.5 late-type galaxy lying
between the quasar images. We detect an extended source overlapping the faint
quasar but not the bright quasar. If this extended source is the host galaxy of
the fainter quasar, then the system is a quasar binary rather than a
gravitational lens.
