Kopitar said the Kings are traditionally competitive, regularly spend to the NHL salary cap, and have world-class facilities, all selling points.
But most importantly, Kopitar believes the Kings, with Doughty in place and with goaltender Jonathan Quick, can win another Stanley Cup championship, adding to titles from 2012 and 2014.
"I can speak for myself, I feel very strongly about our core, even though we are getting older," said Kopitar, 30, who had an NHL career-best 92 points this season (35 goals, 57 assists). "Me and Johnny (Quick, 32) are in the 30s now and Drew (28) is not far behind. Last year, we arguably played the best hockey we have in a long, long time. Maybe even better than the regular season in '12 and '14."
Earlier Tuesday, Los Angeles general manager Rob Blake said the Kings would do whatever they could to re-sign Doughty, one of the top defenseman in the NHL.
"We're under the understanding we're going to do what it takes to get Drew signed," Blake said. "That's our understanding here."
Doughty won the Norris Trophy in 2016 as the player voted the best defenseman in the NHL and is a finalist again, with Victor Hedman of the Tampa Bay Lightning and P.K. Subban of the Nashville Predators. The winner will be announced at the 2018 NHL Awards presented by Hulu at the Hard Rock Hotel & Casino on Wednesday (8 p.m. ET; NBCSN, SN).