Phillie President Bill Giles said he wasn't happy about dealing Redus, but that an injury to right-handed pitcher Kevin Gross concerned the club. Gross suffered a herniated disk early in spring training. Team physician Dr. Phillip Marone said this week that Gross could be bothered by the injury all season.
Giles said the Phillies will replace Redus as a reserve center fielder with rookie Chris James, who was ticketed for the club's Portland farm team in the Pacific Coast League.
Redus, 30, hit .247 with 11 home runs and 33 runs batted in last season. He was on the disabled list from April 28 to July 1, undergoing arthroscopic surgery for removal of bone chips from his right elbow.
Cowley, 28, topped the White Sox staff last season with 11 victories (against 11 losses), including a no-hitter against the Angels. He had a 3.88 earned-run average after starting the season in the minors.