Johnny Ludden of the San Antonio Express-News reports: The Denver Nuggets will begin their courtship of Avery Johnson today by taking his family on a three-day, chauffeured tour of the Mile High City's finest homes, schools and restaurants.If Johnson likes what he sees, his visit could be extended from three days to three years. In a move that all but spells the end of Johnson's tenure with the Spurs, the Nuggets are prepared to give him the $4.5 million midlevel exception in a three-year contract. The total deal could be worth up to $14.4 million, NBA sources said."Hopefully, they'll persuade me enough that I won't have to think about anybody else," Johnson said.