(CBS) — Adam Dunn may be considering retiring a the end of the season, according to a report by Ken Rosenthal of Fox Sports.

Dunn, 33, said he would consider forfeiting the remaining $15 million on his contract.

“I’m not coming back just to come back for money or because I have one year left (on his contract),” Dunn told FOX Sports on Tuesday. “I’m not coming back to chase home-run numbers or whatever. If I end up with 499 and I’m not having fun, see ya — 499 it is.”

Dunn entered Tuesday night batting .228 with a .785 OPS, 30 homers and 79 RBI. He talked about his frustrations with manager Robin Ventura.

“It’s tough. For (veterans) like that, it’s hard to go through. You’re frustrated. Sometimes, it’s you. Sometimes, it’s the way the team is playing. But it doesn’t guarantee anything for next season. He has been around long enough to know next year could be different. It can be better than it is right now.

“He’s coming back,” Ventura said. “He doesn’t have a choice.”