"You always need to listen, but it would have to be the right deal," Towers said.
Towers wouldn't go into specifics but stated that he's held conversations with several opposing general managers in recent weeks about the two All-Stars. Unless Towers is floored by a proposal, Gonzalez and Bell aren't going anywhere.
"I'm actually getting more calls on Heath than Adrian," Towers said. "That's because most clubs are looking for strength in the bullpen."
Towers said the conversations he's had with other teams could prove valuable if during the offseason the Padres reconsider moving Gonzalez or Bell.
"If nothing happens, it's useful in the offseason," Towers said.
Gonzalez, 27, is a two-time All-Star who has been linked to the Boston Red Sox in the last week. His current contract might be one of baseball's best undervalued deals -- he is making $3 million this season, $4.75 million in 2010 with a club option for $5.5 million in '11.
Bell, 31, is making $1.255 million this season, his first as a full-time closer in the Major Leagues. Bell, who has converted 24 of 25 saves this season and made his first All-Star team, is due for what could be a hefty raise.
The Padres, who have already traded outfielder Scott Hairston and reliever Cla Meredith this month, might still make a deal or two before the Deadline.
"I could see a couple of smaller deals," Towers said.
Veteran second baseman David Eckstein is a player who might have been attractive this month had he not missed the past 18 games with a strained hamstring.
Starting pitcher Kevin Correia and third baseman Kevin Kouzmanoff haven't attracted much attention, Towers said.