Ally McCoist feels dismissals for Steven Whittaker and Madjid Bougherra cost Rangers in the UEFA Champions League.
The SPL giants crashed out of Europe's premier club competition on Wednesday after being held 1-1 by Malmo in the second leg of their third qualifying round tie.
Nikica Jelavic's opener in Sweden gave the Gers hope, but two red cards and a leveller from Jiloan Hamad saw them suffer a 2-1 aggregate defeat.
McCoist was understandably downbeat afterwards and was quick to express his disappointment at the lack of discipline displayed by his side.
He also admitted the qualifier could be Bougherra's last game as a Rangers player, with the defender set for a £1.7million move to Qatar outfit Lekhwiya.
He said: "I haven't seen the red cards again. I would have to say, I'm disappointed in the players for giving the ref the opportunity to get a red card but, to be honest, I haven't seen them again.
"I'll have a good look at them tonight or tomorrow. What we said at half-time, looking at how the game was going, was that we thought there was a possibility that the referee might send somebody else off.
"Overall, I'm very disappointed that the players gave the referee the opportunity to send them off."
Asked if he expects Bougherra to head for the exit door, McCoist said: "Honestly I don't know but I would have to say judging by the comments coming from the other side, I would think that looks like a possibility."
McCoist added: "I can't tell you enough how disappointed I am for the vast majority of the players because I thought there were some really terrific performances from some of the Rangers players.
"But it's a team game. Your individual talent can win you games but you win and lose as a team and, unfortunately, it wasn't to be for our nine men."
Rangers discovered on Wednesday that top target David Goodwillie has opted to join Blackburn, but they will not be giving up in their efforts to bring fresh faces to Ibrox before the transfer window slams shut.
McCoist said: "You can always do with more players, there is no doubt about that.
"The point I've made before and the point that I will continue to make is that we have some great players, we really do, and it's our job to get them help.
"I think we saw enough from our team tonight to say that we're not a bad side, in fact we're better than that, we're far better than that.
"We are a good side and our starting group of players I would take against most teams but we need to get the boys help, we need to get those players help.
"I can understand totally the argument saying that we should have got players in and we have been attempting to get players in but we haven't managed to get as many in as we would have liked.
"We will continue to search and press for new talent to come to the club."