Boyd was expected to move to the City Ground on deadline day before a failed eye test saw the deal collapse.
"Alex and I talk every day, at least twice a day," Fawaz told the club's official website. "We have a very good working relationship and it troubles me greatly that people think otherwise.
"I have been involved in football for 15 years and have never interfered when it comes to the players a manager wants to sign. All I want to see is Nottingham Forest back in the Premier League – and if that means I have to sign another 18 players that Alex wants then I will do it.
"Alex and I have spoken at length today and he has already outlined to me the kind of players he would like to bring in on emergency loan."
McLeish was appointed Nottingham Forest manager on December 27.