After the final notes ring out during the Sept. 23 Bob Seger & The Silver Bullet Band concert at the Palace of Auburn Hills, the former home of the Detroit Pistons will become the second in the region to close this year as casualties of the new Little Caesars Arena downtown.

The other, the Detroit Red Wings' Joe Louis Arena, shuttered earlier this year when the last buzzer sounded above home ice.

Now the two sites are primed for new life. But what that life will be is less than certain.

Nothing has been determined about how the next act for The Palace will proceed, said Kevin Grigg, a spokesman for Palace Sports & Entertainment, which owns the 100-acre-plus site along I-75 in a commercial corridor known for its tech and automotive base.

Yet there is a blueprint for redeveloping the Joe Louis Arena site stretching back to Detroit's bankruptcy, when holdout creditor Financial Guaranty Insurance Corp. received development rights to the 9-acre property along the Detroit River.

Under a settlement agreement approved by Detroit's bankruptcy court judge, FGIC is to replace the soon-to-be-demolished arena with a hotel with at least 300 rooms and standing no more than 30 stories; and a mix of office, retail, recreation and residential space.

But that's easier said than done — for many of the same reasons that prompted complaints about Joe Louis Arena over the years.