Having guided the Bluebirds into the top flight after several years spent knocking on the door, Mackay is now charged with the task of keeping his Welsh employers among the elite.
If he is to prove successful in that challenge, he will require fresh faces.
Various names have been linked with moves to Cardiff - including the likes of Tom Ince and Victor Wanyama - but no deals are over the line as yet.
Mackay insists a lack of movement is not down to a lack of effort, but concedes that he will only bring bodies on board if he believes they will improve on what he already has at his disposal.
He told Wales Online: "It's about convincing some players to come to a club who are seen as one of the relegation favourites.
"But I talk to them about the plan we have here going forward and the way that we're going to play.
"It's the whole package that involves everything about Cardiff City, which I think is quite exciting.
"There's an awful lot of work going on behind the scenes in terms of going to watch players, seeing reports coming in, speaking to agents and football clubs to make sure we bring in 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."