Manchester United legend Eric Cantona has questioned whether the club can still attract the best players.
Cantona has warned United that the world's best players will not move to Old Trafford because they cannot guarantee trophies.
"During the time of Alex Ferguson if you wanted a player, the best in the world, he would come to Manchester United because they were winning in England and Europe," said Cantona, who admitted he was unaware of Weghorst or his move to United.
"Manchester United were the biggest club in the world and they had the money to buy any type of player.
"Now it is different, because the best players want to play in a team to win things and United are not in the position to be able to choose the best ones because the best ones won't come to United.
"So you have to be clever. Clever like Liverpool. They took Mane and Salah, not the best players in the world, but with a great team and a great atmosphere, together they won things.
"And then Mane and Salah became the best players in the world. That's a great example for United."