The 38-year old Pole recently finished his contract with Real Madrid and is on a list of players being reviewed by Whites boss Simon Grayson.
"He's on a list of players in that position who are available and might be a proposition. He's one of half-a-dozen who are on the radar," Grayson told the Yorkshire Evening Post.
"We've got two or three really good options and we're just waiting to make the right decision in terms of the player's ability and the finance package to go with it all."
Leeds are looking for a replacement following the sale of former number one Kasper Schmeichel to Leicester City.