Celtic defender Carl Starfelt has suffered an injury scare while on international duty with Sweden.
With pre-season just around the corner, the centre-back was replaced at half time during the win over Slovenia after what appeared to be a hamstring knock.
The 27-year-old was replaced by Alexander Milosevic during a rare start for his country during the Nations League clash.
The games are coming thick and fast for Sweden with a double header against Norway and a clash with Serbia during a seven-day stretch.
Sweden boss Janne Andersson refused to go into detail on the knock following the full-time whistle, but all-but ruled the Celtic star out of the remaining Nations League tie post-match.
He said: "It is a problematic situation. He is a very important part of the team.
"Even he does not have experience, you want a centre back you are used to."
Ange Postecoglou will be monitoring the situation with interest as he prepares to bring his squad back together and gear up for their bid to defend the Premiership title.