Fraser Brown says Finn Russell was "the obvious choice" to replace Jamie Ritchie as Scotland captain for the Six Nations.
Head coach Gregor Townsend this week confirmed Russell will lead the team as co-captain alongside Rory Darge.
While Brown says his Glasgow Warriors teammate Darge is "a brilliant player" who "leads by example" he believes Russell was the outstanding candidate to take on the leadership role.
“Finn was the obvious choice," Brown said on the BBC Scotland Rugby Podcast.
"Looking at the parameters that Gregor set out, he wanted someone that was guaranteed to be in that starting 15. Finn to me is just about the only player that’s guaranteed to start.
“Finn has shown over the last couple of years that there’s a maturity on and off the pitch. Knowing Finn pretty well, he leads really well, he knows his game inside out, he knows how he wants to run the team. He’s a very good communicator in and around the pitch.
“Darge has got massive amounts of potential, he’s already a brilliant player. Leads by example, probably a little bit more quiet, leads well on the defensive side."
Brown thinks if both Russell and Darge are in the starting line-up it will be the Bath fly-half taking on more of the leadership responsibilities.
“That’s how I would see it," said Brown, who has been capped 61 times for Scotland. "Finn’s done that role before. He’s been a leader in that Scotland group since he came in in 2014.
"He was 22 at the time but he was a leader already. That’s the nature of the position he plays but also the type of character he is and how well he knows rugby.
"He has a personality that kind of draws people to him, but he has that authority when he speaks as well because of the type of player he is, not just what he does on the pitch but his knowledge of the game. Finn was a really natural choice."