Lewis Hamilton and Charles Leclerc riding for Ferrari will be "great to watch", according to Nico Rosberg, who expects a "tough battle" between two Formula One drivers on a similar level.
Mercedes and Hamilton will part ways after 12 seasons together as the seven-time world champion prepares to join Ferrari.
Leclerc got the nod ahead of current team-mate Carlos Sainz to remain with the Italian team, with the Ferrari driver ready to join forces with Hamilton in 2025.
"We're all looking forward to that dynamic," Rosberg, who partnered Hamilton at Mercedes from 2013 to 2016, told Sky Sports.
"Charles doesn't seem like someone who goes into conflict too much with his team-mate, so that will make it easier, maybe it won't be too extremely spicy."
Hamilton has failed to finish ahead of Mercedes team-mate George Russell in any of his first five 2024 grand prixs.
Yet Rosberg has no doubt over his quality, nor his soon-to-be partner Leclerc, who he ranks just behind Max Verstappen.
"Charles is probably the second-best qualifier out there after Max Verstappen, one could possibly say at the moment, so it will be a tough battle for both," Rosberg added.
"I think the level could be pretty similar, so it will be great to watch."
Ferrari's decision to move on from Sainz may come as somewhat of a surprise, given the team have featured on the podium at four of the five races this season.
Whereas Hamilton's switch comes after Mercedes failed to engineer a car capable of competing with the likes of Red Bull, though choosing Ferrari caught the eye.
"It came as a huge surprise," Rosberg said. "No one expected it. But If you look at the grand scheme of things, then why not?
"It's towards the end of his career. They are two legendary teams and I know Lewis has always been a big fan of Ferrari, so why not make that switch and have a different experience of driving in red once?
"At the moment, it seems in performance terms to be the right decision for him, which maybe he's made an amazing move like he did 12 years ago by moving from McLaren for Mercedes.
"McLaren was winning races and Mercedes was nowhere, and the moment he moved, McLaren went backwards and Mercedes started winning races. Maybe he can get the same timing done again."