The 30-year-old was allowed to leave on loan after Leeds signed Rob Hulse, Marlon King and Ian Moore near the transfer deadline.
The former Leicester and Aston Villa striker has scored two goals in five appearances for the Saddlers and their boss Paul Merson said: "Julian has shown he's a top class player and with his pace he will always score goals. I said when I signed him that he's too good for this league and I'll be trying my hardest to keep him because our success depends upon it.
"I'd rather keep a player like Julian and sacrifice two average players any time. If he had been here six months earlier then who knows what we may have achieved this season."
The former Leicester and Aston Villa striker has scored two goals in five appearances for the Saddlers and their boss Paul Merson said: "Julian has shown he's a top class player and with his pace he will always score goals. I said when I signed him that he's too good for this league and I'll be trying my hardest to keep him because our success depends upon it.
"I'd rather keep a player like Julian and sacrifice two average players any time. If he had been here six months earlier then who knows what we may have achieved this season."