There is no explaining why some teams do what they are doing. But according to Bucher 7 to 8 teams have called about Roy. They may have only been calls to find out about his knee condition. They may have been a legimate probe for a trade. But they wouldn't call if they weren't interested in a deal.
It's almost too depressing to keep beating on this drum, but for chrissakes people, get over it. Roy isn't going anywhere unless he takes a medical retirement ... regardless of Bucher saying 7 teams have called about him. What he failed to mention was what they called to say about him: Random nameless GM: "So Rich, sorry to hear about your boy Roy. Are things really as bad with his knees as we've heard." Cho: "Thanks for the kind words. It doesn't look great ... So are you interested in trading for him maybe?" Random nameless GM: "Oh, god no! I just wanted to call and offer my condolences. Good luck with him by the way." Cho: "Uh, thanks. So you're certain you don't want him?" Random nameless GM: "<laughs out loud> Uh, no ... <click>."