The Boston Red Sox and Chicago White Sox have been discussing a possible trade for Jake Peavy for days but were unable to find an agreeable match. It wasn't until they engaged the Detroit Tigers on Tuesday, Boston general manager Ben Cherington said, that the pieces finally fell into place. The Tigers, meanwhile, acquired gifted glovemanJose Iglesias from Boston as the shortstop they will need if All-Star Jhonny Peralta is suspended, as anticipated, as part of MLB's Biogenesis investigation. The White Sox acquired outfielderAvisail Garcia, regarded as the top power prospect in the Detroit system, plus three prospects from the Red Sox: 100-mph throwing right-hander from Class A Greenville, 20-year-old Dominican Francelis Montas, righty J.B. Wendelken and infielder Cleuluis Rondon. Villareal will be assigned to Boston's Triple-A team, Pawtucket. The deal would appear to strengthen two teams who expect to be playing in October: the Red Sox, who are a half-game behind the surging Tampa Bay Rays in the AL East, and the Tigers, the defending AL champions who are 2½ games ahead of the Cleveland Indians in the AL Central. The White Sox, last in the AL Central, continue the process of rebuilding; they already made one deal with Boston earlier this month, acquiring outfield prospect Brandon Jacobs for left-handed reliever Matt Thornton.