Partizan Belgrade have insisted they have not had any contact with Manchester United over Zoran Tosic or Adem Ljajic.
United are believed to be looking at both players with reports suggesting they have already agreed terms for Tosic which could also see Ljajic moving to Manchester.
Tosic is a current Serbian international and reports in England have claimed that Sir Alex Ferguson will be part of a United delegation that will attend a work-permit hearing this week over the left-winger.
The 21-year-old does not meet current work-permit criteria to play in the Premier League but, given he is valued at £8million, reports suggest United are trying to broker a permit for him.
However, Partizan sports director Ivan Tomic has stated that United have not signed either player, amid claims the European champions will try and strike a double deal.
United's interest in Ljajic - another attacking midfielder - heralds from the fact he was on trial at Old Trafford earlier this season.
The 17-year-old is understood to have impressed, which has led to constant speculation that a move to United was in the pipeline.
"It is not true that Tosic and Ljajic have already signed for Manchester United," Tomic said.
"It is simple, there has been no direct contact or official offer coming from England.
"Of course, it would be nice if they want some of our players, but it's not true."
Tosic has also continued to insist he knows nothing about a deal.
"I have nothing new to add on that subject, as I contacted my managers and they told me to keep my focus on playing and to stick to our mutual agreement which is that they will not inform me about anything until things move on to a much clearer situation," Tosic told Vecernje Novosti.