Celtic forward Sead Haksabanovic overcame an injury scare to start for Montenegro in their Euro 2024 qualifier against Serbia.
The 23-year-old's nation lost 2-0 at home after a late double from Juventus striker Dusan Vlahovic.
Haksabanovic had previously sparked concern after being subbed at half-time during his side's recent victory over Bulgaria.
This was followed up by comments from his national team boss Miodrag Radulovic who confirmed that some of his players were struggling with their fitness.
He said: "When everything was put together, we played well, but we have some fatigue and injuries from the match."
The Hoops winger played 77 minutes in total during the fixture.
READ MORE: Every Celtic player's season so far ranked and rated
Meanwhile, Celtic hero Stiliyan Petrov has opened up on John Barnes' times as manager of the club, claiming "there was always fighting" going on between the players.
The Bulgarian was signed by the former England international in 1999, who was undertaking his first job in management, but things quickly started to go pear-shaped.
Barnes only lasted eight months and was sacked after the Parkhead side's Scottish Cup defeat to Inverness.
And Petrov has detailed the toxic atmosphere in the dressing room at that time.
Speaking to FourFourTwo, he said: "I couldn't understand much of what was going on, due to the language barrier, but there was always fighting.
"I could see little cliques and problems. He couldn't control the powerful characters. It was John's first job since retiring as a player, and a big one for him.
"The team was winning, but we had many internal issues. The players weren't giving everything for him.
"Sometimes a job can come a bit too early for someone, but that doesn't mean they're a bad manager."
Our Celtic Digest newsletter brings exclusive content directly to you rather than solely through the website. You can already find us on YouTube, Twitter, Facebook, TikTok and Instagram but we will also send bespoke opinion pieces and special features directly to your email inbox every evening. Not only will you receive this article from Sean Martin, Tony Haggerty or Aidan Macdonald (or, sometimes, from all three) but you will also get easy access to our best content from the last 24 hours too. It’s a great way to keep up to date with what’s happening at Ange Postecoglou’s Scottish champions. To sign up, simply take five seconds to type in your email here. Simple!
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here