Now that he’s a free man, can Michael Jackson put his empire back together? So far, only one offer is being negotiated that would add to the income generated by his catalog and music publishing interests. That’s come from a casino to stand next to the Trump Intl. Hotel & Tower in Las Vegas. Being built by billionaire Phil Ruffin, Donald Trump’s partner in the Tower, the unnamed casino-resort will be open in 2007 or ’08. Reps have been quoted saying Jackson would draw more than $80 million, and a long-term residency similar to Celine Dion at Caesars Palace is being discussed. “My perspective, by looking at ’07-’08, is that Americans love a comeback story, and everyone would want to see the regentrification of an icon,” said Jack Wishna, Ruffin’s partner, who is putting together the entertainment side of the casino business.