Washington, as Carlson's current team, would be able to offer him a maximum eight-year contract. Other NHL teams can sign Carlson for at most seven years.
The Capitals signed Carlson to a six-year, $23.8 million contract in 2012. He could potentially double the annual average value of $3,966,667 from his expiring contract.
Carlson was selected by the Capitals with the No. 27 pick in the 2008 NHL Draft and makes his home in the Washington area year-round. Although he was born in Natick, Massachusetts and grew up in Colonia, New Jersey, he said he plans to have his day with the Stanley Cup here this summer.
"This has been my home," he said. "I've lived here every summer since I've been here. This is my home base and, obviously, the guys that I've been around, the experiences we've had, I love the area and this is all I know."
Whether that would be enough for Carlson to stay with the Capitals remains to be seen. Carlson said he isn't sure if winning the Stanley Cup might impact whether he re-signs.
"I don't know," he said. "I haven't had any talks with anyone, so I don't know what you would like me to say. I wish I had all the answers. It will be a process to get those answers."