Johan Santana is not yet officially on the trade market, but that seems to be an inevitability. What isn't inevitable is that Santana, now property of the Twins, will begin his 2008 season somewhere besides the Metrodome. The gap between an available Santana and a traded Santana figures to be steep, and that means high asking prices for all suitors - including the Yankees, who have targeted the two-time Cy Young Award winner. In return for Santana, the Twins likely will ask for a package centered on second baseman Robinson Cano, a person familiar with Minnesota's operations said yesterday.