with a four-story glass dome, and the first four stories were converted into a shopping atrium. In addition, a visitor center for the building's Skydeck was constructed. The renovations, designed by SOM, were completed in mid-1985. Paul Gapp of the Chicago Tribune wrote that SOM had "scaled the new entrance skillfully, in keeping with the main building's height" and that the new atrium "relieves the formerly cramped feeling from just inside the Franklin entrance". Sears announced in 1988 that it would sell the tower and relocate its merchandising division from the lower half of the building. The company wanted to earn at least $1 billion from the sale of the Sears Tower, so it offered multiple concessions to potential buyers, including a guarantee that Sears would continue to pay rent on the lower half of the building until tenants were found for these stories. Four large firms were negotiating to buy the tower by July 1989. The company had difficulties finding a buyer, in part because the lower stories were too large for many potential tenants. Sears nearly sold the tower to Canadian company Olympia & York, but the deal was canceled in September 1989 because the two firms could not agree on who would pay the property taxes. In November 1989, Sears decided to instead refinance the building. The next year, Sears took out a mortgage loan on the tower for $850 million from MetLife and AEW Capital Management, with MetLife as the holder of the mortgage note; the loan would mature in 2005. In 1990, the law firm of Keck, Mahin & Cate decided to move into a development that would become 77 West Wacker Drive, rebuffing Sears' attempts to entice the firm to stay. Just two years later, Sears began moving its own offices out of the building to a new campus in Hoffman Estates, Illinois, which was completed in 1995. As the maturation of the mortgage approached, Sears renegotiated the loan in 1994. The negotiations resulted in an agreement where Sears would no longer be liable for the $850 million loan, although it would only nominally own the building, while AEW and MetLife effectively had total control. As part of the 1994 agreement, AEW and MetLife would be able to take official ownership of the building in 2003. In 1997, Toronto-based TrizecHahn, at the time the lessee of the CN Tower, acquired AEW's holdings in the