McGhee's first match at Pittodrie ended in a heavy defeat
Aberdeen manager Mark McGhee hopes to strengthen his side after a 5-1 drubbing at home by Sigma Olomouc.
"It's my first game and I've gone from a legend to an idiot but that's fine, I'm here for more than one game," McGhee told BBC Scotland.
"We've not been able to improve the squad in the month I've been here and that's now looking like a bad failing.
"But we do have money to spend on two or three players and we will try hard to spend it before the league begins."
McGhee, who starred in the Dons' famous run to European Cup Winners' Cup glory in 1983 added: "Maybe we should have gambled some of that money earlier but we want to spend wisely because we have a long season ahead of us.
"We will try and salvage some improvement and pride from the second leg since I can't see any way we're going to win the tie, that's out of the question.
"Our European campaign is over but we have a game in two weeks' time against Celtic that we need to be better for and that's what we need to use the next game for."
The Dons, who were missing injured central defender Zander Diamond and had midfielder Derek Young playing at right back, were torn apart late in the game, with the visitors much sharper in all departments.
"We were taken by surprise by the difference in levels of fitness," admitted McGhee. "We looked well short and we were caught by a couple of goals simply by fatigue.
"We looked a little confused about when and where we should have been passing the ball in terms of the system.
"We had to cobble a defence together. I'll have to go away and look at that and think 'should I really have shut up shop and tried to get a 0-0 or nick it 1-0' instead of trying to instil belief in the forward players and trying to win the game."
After the heavy defeat, McGhee kept his players in the dressing room for more than half an hour before addressing the media and shouldered a great deal of the responsibility for the poor showing.
"I'm not going to publicly lambast the players but I've seen in every single one of them where there has to be improvement," he added.
"The fitness has to be better and we've got to be stronger but it's a small group and we had people playing out of position, which was enforced upon us.
"It's my job to put out a team and we've lost five goals, so ultimately I have to take responsibility.
"You can't blame Derek Young because he was honest about his performance and he did his best. It was my decision and it backfired on us.
"The result was hugely disappointing and embarrassing but we'll be a better team in a fortnight, there's no doubt about that."
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