I guess it won't be easy for Man United to sign Casemiro. Money can indeed solve many problems but money will not always be the answer to everything, the proof is that what Man United offered to De Jong was not able to shake his stance. Most likely if Casemiro gets certainty (about his contract extension at Madrid) then surely he will reject the offer from Man United. If only Real Madrid didn't give Casemiro any guarantees, then Man United will have a hope to sign him, but it is also possible for Casemiro to stay at Real Madrid until his contract ends, which means Man United should come back at a later date if they still want him.
To get Casemiro already seen the green light from Real Madrid. Initially Manchester United offered Casemiro for £50 million, then Real Madrid raised the price to £60 million.
Manchester United agreed to the price desired by Real Madrid. If this is true, Casemiro will only have to undergo a medical to join Manchester United and the former Sao Paulo man signed by Real Madrid in 2013 will become only the fourth player to land at Old Trafford since the arrival of Erik ten Hag.