Peter Grant has warned that Scotland is now using a zero-tolerance approach for players who withdraw from squadrons with grubby apologies.
In anticipation of the closing Nations League matches with Albania and Israel, Alex McLeish was hit by a series of call-offs including Charlie Mulgrew, Matt Ritchie, Craig Gordon, Stephen O'Donnell and Kevin McDonald.
Rangers midfielder Ryan Jack, who was called late on Sunday, became the last name to retreat due to injury with Aberdeen's Mikey Devlin also a big doubt.
Ryan Jack became the last player to come out of Scotland's national team due to an injury
The latter may open the door for Hamburg's David Bates to make his full debut on Saturday in Shkoder.
Thanks to the higher demands that players make nowadays, Grant has no problems with players who fail to meet their international obligations because they are not fully fit.
But the right hand of McLeish is adamant that anyone who is supposed to have no valid excuse for not reporting will simply not be considered.
& # 39; I think that's what you've seen, & # 39; said Grant.
& # 39; That you will have noticed with some of the selections we have had. That is what happened. There was no doubt about that.
& # 39; Myself, Alex and James (McFadden) see a situation in which we ultimately had to choose the national team.
& # 39; If you do not want to play, no problem. We are not going to force you, we are not going to fight and ask you to come.
& # 39; If you do not want to play for your national team, that's it. You will be very lucky if you are selected again. If you do not want to play through injuries, it is completely different. But if it comes to the fact that you do not want to play, I do not think you'll be back again. & # 39;
Peter Grant (left) talks to Scottish manager Alex McLeish during Tuesday's training session
Affirming the latest interruptions to McLeish's plans, Grant added: "Ryan is out and Mikey is a concern." He trained but just felt something after.
& # 39; We'll know better later on. We arrange things and the doctors will see him. & # 39;
When asked if the door was now open for Bates to take 21-year-old step-up as a partner for Scott McKenna, Grant said: "Absolutely. Everyone comes with a chance in the team.
We talk about the boys who have to go out, but then you look at the boys who have come in.
"David Bates was here for us – he was so excited to be here. But he also has a talent. He went to Germany, he has a belief in himself, that's what he wanted to do.
& # 39; It is difficult to leave a club like Rangers, let's be honest, for a young man. But he did, went to Germany and we spoke with his coach who is happy with him. He took a suspension and was out of their team at the weekend.
& # 39; But we have no problems with him. He fits the boys. But he knows them. It is not as if he is long gone and these players do not know. He feels good with these players and he has trained very well. & # 39;
Jack was forced to withdraw from the team after having sustained an injury during the training in Scotland
The solid victory of Scotland in the section opener with Albania was followed by a dismal defeat in Israel.
While a loss of one goal on Saturday would still have to leave McLeish's party to beat Tuesday on Israel to outdo the group, Grant admits that a defeat can not be approved.
"The match in Israel was very bad, I think everyone has admitted it," he said.
& # 39; There were things we did in the game, and that is not the way we wanted to play in any form. But we have to be careful, while it is certainly disappointing, certain things have not happened, we asked to happen, not by guilt, but that is what happens when the game goes against you.
& # 39; We have to put that to bed. We talked to the boys about it. That's going to bed. It's about concentrating on these two games.
& # 39; Our goal is to win the two games, nothing else. Win the first one. It's the old cliché, but the fact is that you have to go out and win the first game. It is away from home, but it does not matter.
& # 39; We want to win it. Then the Israel game will take care of itself. We must be thinking. As professional footballers you can not look too far ahead. The next one is the most important one for us, namely Albania. We know that that is the challenge: winning in Albania. If we win the two games, we are at the top of the group, that's it. Bottom line. That is the goal. & # 39;