But, according to a team source, talks involving Wolf are "moving along slowly" even though the market has been busy with the handful of trades involving pitchers -- such as CC Sabathia to Milwaukee, Rich Harden to the Chicago Cubs and, on Thursday, Joe Blanton to Philadelphia.
Wolf, who is scheduled to start on Saturday against the Cardinals at Busch Stadium, is 6-9 with a 4.66 ERA in 20 starts this season. Wolf yielded six runs in five innings during his past start on July 13, which resulted in a 12-3 loss to Atlanta.
In regards to Maddux, who started Friday against the Cardinals, it's not known if he is considering waiving his no-trade clause. Towers spoke to Maddux before the All-Star break and told him of the teams that have shown interest in him.
Maddux, who lives in Las Vegas, has repeatedly said he likes it in San Diego and has enjoyed his one-plus seasons with the Padres. According to a source, Maddux might remain in San Diego through the end of the season.
On Thursday, the Padres sent Clark to Arizona for 22-year-old pitcher Evan Scribner, who will report to Class A Lake Elsinore. It's the kind of deal the Padres are likely to make moving forward.
Towers said one week ago that San Diego was looking to add prospects before the Trade Deadline, and that trading any of the prospects in the Padres system wasn't likely.
Corey Brock is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.