Liverpool hero John Aldridge says Casemiro has joined Manchester United only for money.
Aldridge suggests the Brazilian has put cash ahead of football by agreeing to leave Real Madrid to join United.
"Why would you leave the reigning European champions to join Manchester United at a moment when they are on their knees? Money is the only answer," Aldridge told sundayworld.com.
"Casemiro is a good player and I didn't believe it when reports emerged a few days ago saying United were in talks to sign him.
"United are a massive club, but they are at a moment in their history where most top players would run a mile from them.
"They are playing the Europa League, getting hammered by Brentford and the club seems to be in total turmoil.
"The fans are out to get the owners, the players look broken and Casemiro looks at all that and thinks he wants to sign. It makes now sense.
"United have signed a few players in recent years who went there for the money and it didn't work out too well. There is a danger this could happen again with Casemiro."