And they also go on to state Etihad chiefs want to agree a watertight deal now which would also allow the talented 21-year-old to play out the remainder of the season at the Johan Cruyff Arena.
That will certainly give Ajax something to think about, having previously made it clear to de Jong's increasing list of admirers they don't want to let him leave until next summer.
City's power play will also put further pressure on Barcelona, who were hoping to get the Netherlands international for a fee in the region of £50 million, knowing the Ajax starlet has always had a soft spot for Camp Nou.
However, the Citizens know part of his Barcelona admiration stems from Pep Guardiola's trophy-laden period at the club, and his mantra for applying Cruyff's footballing philosophy of 'Total Football'.
The City boss has made it clear he has no desire to sign another midfielder in January and wants his board to press on with boxing off De Jong, who is already being labelled a generational talent by observers in the Netherlands.