The Lanarkshire boss is in the midst of building a squad for the new campaign.
However, with their glamour Champions League qualifying round tie looming, time is of the essence for McCall as he attempts to improve his options.
Despite leading his side to one of the best seasons in their history, the boss has seen his budget cut by a massive £200k this summer. And while he is pleased with the work he has been able to do so far, he knows adding further reinforcements will not be easy.
McCall said: "Everyone is in the same boat so I'm not whingeing. It's a fact of life. The difficult part is that some of the players had their best seasons and we got more points than before, so it's hard on me then saying to lads 'We want to re-sign you, but you'll have to take a cut'
"We had to wheel and deal but we've signed the two senior lads in Stevie Hammell and Keith Lasley and we hope Steve Jennings signs soon. Then we'll be back to near enough the same core.
"But it's always nice to bring a couple of fresh faces in for the fans as well as the players, and we need to replace what we've lost.
"We might go down the loan route because it's cheaper but that means you're getting a younger one from England, like a Gavin Gunning.
"To get an experienced one, he won't come for a year, it would have to be two, you need to pay their relocation, and we don't have that money.
"So unless we get someone from Scotland, we'll go down the loan route."
The Fir Park side have become accustomed to early-season starts, with the Lanarkshire side embarking on a number of Europa League runs in recent seasons.
This year will be no different and with the start of the new campaign is fast approaching and domestic and European fixtures on the horizon, McCall admits his tight squad are going to be stretched to the limit.
He said: "We've got the Champions League on July 31, the SPL starts on the Saturday, we play Champions League again the midweek after that and then the SPL again.
"Then if we went into the Europa League it's the week after that.
"I was speaking to Ricky Sbragia in Holland and he was saying when he was at Bolton, they could have two different teams from 30-odd players to cope with that kind of schedule. We will have 18.
"There will come a stage when you are out of Europe and people will start looking at your league position and as a manager I've got to stay focused on the SPL."