Former UFC middleweight title challenger Nathan Marquardt (Pictures) returns to the Octagon June 7 in London versus once-beaten Thales Leites (Pictures), according to published reports.

The 185-pound fighters were scheduled to fight in early February. Leites, a 26-year-old fighter out of the Nova Uniao camp, gave up his undefeated record to Martin Kampmann (Pictures) in November 2006. He has rebounded to win three in a row inside the UFC, increasing his overall record to 12-1.

After running into Anderson Silva last July, the 28-year-old Marquardt (26-7-2) came back to stop Jeremy Horn (Pictures) on the Feb. 2 card he was originally slated to fight Leites, who was forced to withdraw due to an injured hand.

The competitive middleweight tilt joins the undercard of UFC's next UK-based card, which is headlined by a light heavyweight contest featuring Chuck Liddell (Pictures) and Rashad Evans (Pictures).