Croatia head coach Zlatko Dalic claims Scotland are receiving favourable treatment after Billy Gilmour tested positive for COVID-19.
No other members of the Scotland squad have been forced to isolate ahead of Tuesday's final Group D game at Hampden Park.
Gilmour is unlikely to play for Scotland again at Euro 2020, unless Steve Clarke's side manage to make the quarter-finals, as he must isolate for a period of ten days.
To stand any chance of progress that far, Scotland need a win over Croatia on Tuesday night.
But Dalic feels that any further crack-down on the Scotland camp after Gimour's positive test stacks the deck against his side.
"We have to travel, we are in isolation all the time," he told his pre-match press conference, "And they have told us if one of us is positive then we all go in to isolation.
“We’re afraid of all these things and being told we are not allowed to do this and that.
“Even so, we want to achieve success and will be fighting very hard to do it. We will have to be patient and take our chances.
“We are a very motivated side but we see Scotland as a very tough team. They played well against England.
“I wouldn’t go into [talking about the St Andrews camp] but I know how much pressure we had when it came to that camp.
“We made an exception to not be in the camp, so we are travelling every three days. It’s not good, those are not good conditions.
“I would not like to comment and say something that isn’t related to the field.
“The conditions should be the same for all, but they are not the same for all.
“Nonetheless, I wish Gilmour a good recovery and I wish that nobody else ends up positive with Covid because that would make things difficult."
Meanwhile, Rangers full-back Born Barisic is unlikely to feature for Croatia against the Scots. The 28-year old has only trained once in the past couple of days according to Dalic, but has travelled with the rest of the squad.
Gilmour ruled out for Scotland with Covid-19 but England squad all clear