"I would like to keep pitching," said Putz at the time, adding that he was "probably not" willing to go down to the Minor Leagues.
Putz was the D-backs' closer for 2011-12 and half of 2013 before being limited by injuries. Off the field, he was a leader in the clubhouse.
"I've been on plenty of different teams, but the group of guys in that clubhouse are a special group and not being able to see those guys everyday is going to be the hardest part," Putz said. "They're just quality, character guys."
The D-backs are on the hook for the roughly $3.5 million left on Putz's contract this year. If another team signs him, they will only have to pay the prorated portion of the $500,000 minimum salary.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.