Happ has been mentioned as possible trade bait for Roy Halladay. By the way, Halladay pitched a complete game today, giving up only one run against Boston. I'm not sure the Phillies should give up Happ for Halladay.
Happ's success isn't a fluke. When you go undefeated in 7 decisions with a below-3 ERA, your not just a flash in the pan. Happ is a good pitcher who can excel at the Major League level.
With today's win the Phillies have a 7 game lead in the NL East. The Phillies are arguably the hottest team in baseball. They have won 8 straight ball games and 12 out of 15 this month. Maybe the Phils don't need to give up their farm for Halladay. It's not as if getting Halladay will guarantee the Phillies another World Series.
The Phillies interest in Halladay is as high as ever. According to Ken Fidlin of the Toronto Sun, Phillies adviser (and former GM) Pat Gillick was in Toronto to watch Halladay toss his complete game. Also reportedly there were executives from Brewers, Rangers, and White Sox.