The Scot concedes it is proving difficult to attract players to a club touted as relegation favourites next season, but insists he is determined to bolster his options
The Bluebirds are gearing up for their first ever Premier League campaign, but are yet to make a single addition to the squad which won the Championship last season.
And Mackay has revealed the club are finding it difficult to convince player to join a club regarded by many as favourites for relegation, but insists he remains determined to bolster his options.
"It's [about] convincing some players to come to a club who are seen as one of the relegation favourites," he told BBC Sport.
"But I talk to them about the plan we have here going forward and the way that we're going to play and the whole package that involves everything about Cardiff City, which I think is quite exciting."
"The recruitment team are in their busiest time of the year at the moment in between [transfer] windows.
"There's an awful lot of work gone on behind the scenes in terms of going to watch players, reports coming in, speaking to agents and football clubs to make sure we bring the correct quality of player that's going to help the group.
"The quality of the player again has to go up because we're going into an even better league.
"[When] bringing players to the football club [we] try and make sure we investigate them well enough that we don't make too many mistakes and they come in and be successful over a period of time."
Mackay also believes that, regardless of the signings he manages to make this summer, Cardiff will face a real fight to stay in the Premier League next season.
"We're in one of the toughest leagues in the world and it's where we want to be," he added.
"We had an awful lot of success last season and an awful lot of good days.
"But we also fully understand the difference this season is going to be. It's something I'm going to be very open with the fans [about] in terms of the backing they are going to have to give us at certain times of the season.
"It is going to be difficult. This season we're going to be playing against some real top teams and it's something that we've got to look at over the whole season.
"It's over the whole season that we make sure we survive and stay in this division."