It took a couple of weeks of trade talk, according to general managers Rob Blake and Kyle Dubas, but on Monday, the Los Angeles Kings and Toronto Maple Leafs finally agreed on the first big trade of 2019.

Impact defenseman Jake Muzzin is off to Toronto in exchange for AHL forward Carl Grundstrom, the rights to prospect Sean Durzi, and the Leafs' first-round pick in the 2019 draft.

"When he joined Los Angeles coming out of junior, they were at the same stage that we’re at now," Dubas said of Muzzin and the Leafs during a conference call. "He had that experience of seeing a team mature from being a team that wanted to contend, to contending, and then ultimately winning."

Sitting at opposite ends of the standings, Dubas and Blake made a straightforward deal that - as anti-climactic as it sounds - could be a win-win for both franchises.

What this means for the Leafs

The Leafs' top pairing of Morgan Rielly and Ron Hainsey, locked in all season long, appears to be toast.

Dubas wouldn't confirm it, saying head coach Mike Babcock would need to speak with the affected players first. However, it's safe to assume the left-handed Muzzin, who'll turn 30 on Feb. 22, will slide into Hainsey's spot on Rielly's right side Friday when the Leafs come off their bye week for a road game against the Detroit Red Wings.

Muzzin, an all-around defender who won the 2014 Stanley Cup alongside Drew Doughty, is a gigantic upgrade on the 37-year-old Hainsey, whose rapid decline in 2018-19 frustrated Leafs fans to no end.

Here's an educated guess at Toronto's revamped defense pairings, assuming everybody is healthy - Jake Gardiner is out with back spasms at the moment. Hainsey would slide down the depth chart but not out of the lineup:

A penalty killer, minute muncher, and puck mover with strong possession numbers, Muzzin is exactly the type of defenseman the Leafs - who own the league's fourth-best offense, but can sometimes leak scoring chances - needed.

Goalie Frederik Andersen may be the greatest beneficiary of this trade, given Muzzin's defensive ability. On second thought, perhaps this is Rielly's big break. It's amazing, really, that he's having a Norris Trophy-caliber season and is about to start skating with a legitimate running mate.

"I think he's an elite defenseman," Blake said of Muzzin moving to the Eastern Conference. "He's going to bring the physical aspect, but he has poise and patience to make plays. I think the adjustment will come naturally for him because he's a top defenseman."

The cost for Muzzin isn't negligible, so Dubas doesn't look like a thief by any means. Still, considering his track record and contract - Muzzin's signed through next season at $4 million per year - and the fact that the draft pick will most likely be in the mid-to-late 20s, it's a smart, cap-friendly bet.

Muzzin, a 2007 fifth-round pick of the Pittsburgh Penguins, has 51 goals and 162 assists for 213 points in 496 career games, all in a Kings uniform. He was born two hours west of Toronto in Woodstock, Ontario.

What this means for the Kings

Speaking of term, Blake wouldn't budge when a reporter asked if the Kings are shopping or taking calls on players under contract past this year.

Los Angeles' record through 50 games (20-26-4, rivaling only the woeful Ottawa Senators), and Blake's willingness to ship out useful players months ago, suggests most - if not all - the names on the roster may be on the table.

But neither of the players acquired from the Leafs will join the NHL club immediately. "We’re at the bottom of the league," Blake said. "We made this deal for the future of the organization."

In Grundstrom, the Kings are receiving a first-year Marlies winger with top-nine NHL potential. "His compete, his effort, and work have been mainstays," Blake said of the 21-year-old Swede. "His sense and his poise is above average and (he’s) a strong skater."

Meanwhile, Durzi is an unsigned late bloomer still playing in the OHL for the Guelph Storm. The 6-foot, 196-pound defenseman was drafted in the second round by the Leafs in 2018, his second year of eligibility. Blake likes the 20-year-old's hockey IQ and skating ability.

The Kings, who won two titles in three years to start the decade, have fallen on tough times after failing to adapt to a faster style of play. Blake has been able to get his team nine selections in the 2019 draft - one pick per round, plus the Leafs' first and a fifth-rounder from the Arizona Coyotes.

The main takeaway

By pulling the trigger on a deal of this magnitude four weeks away from the trade deadline, Dubas made life difficult for rival GMs looking to bolster their blue lines in the leadup to Feb. 25.

All of a sudden, Dougie Hamilton, the other prized defenseman said to be available, is a white-hot commodity. Some would argue the Carolina Hurricanes should command a hefty return regardless. But now, with Muzzin off the market, the price for Hamilton will be steeper.

In the same breath, the pressure is completely off Dubas and the Leafs. Barring a major injury or a last-minute desire to go all-in on the 2018-19 season, the Muzzin trade may be the only significant move necessary. Expect improvements around the edges of the roster, not more fireworks.

On Monday, Dubas alluded to the organization's multi-year contention plan, reiterating what he's noted in the past about the type of players his club desires. "Our preference was to acquire players who did have some term on their deals," he said.

Muzzin certainly accomplishes that. And, based on Blake's tone during his conference with the media, the rebuilding Kings will miss his play and presence - and potentially other key pieces of their Cup-winning core as they move to restock the cupboard.

"Terrific player, terrific person," Blake said. "(Muzzin) took a huge step in leadership over the last few years here. Very difficult day here for us to move players that have brought so much to this organization."

John Matisz is theScore's National Hockey Writer. You can find him on Twitter @matiszjohn.

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