Heatley spoke Friday during a conference call, the first time he's commented publicly since he asked for a trade in the spring.
"When I signed in Ottawa two years ago, I felt it was to be an integral part of the team," Heatley said. "Over the last two years and more recently over the past year, I feel my role was diminished. This past season, it diminished a lot more.
"I'm a player who can play in a lot of different situations. I don't feel I was given that role on the team."
The winger signed a six-year contract extension less than two years ago.
The former 50-goal scorer says if he's still a Senator next month, he will report to training camp.
"I have a contract and I'm going to honor that contract," he said. "At the same time, I think we know there are other teams out there who are interested, and hopefully something can get done."
Heatley is among those invited to the Canadian Olympic team orientation camp starting Monday in Calgary.