Manchester United Treble winner Peter Schmeichel has questioned their swoop for Real Madrid midfielder Casemiro.
Casemiro is set to join the club for £70 million, pending the completion of his medical and visa application.
Schmeichel told BBC Sport: "I'm surprised that this player is being mentioned at that amount of money and on those wages, at that age, when we don't know if he can do the job.
"Maybe sign someone who we know can play in the Premier League for now, and then next season look at someone like Casemiro next year, who is also an exciting player to watch."
United will face Liverpool at Old Trafford on Monday, as both sides look to register first Premier League wins of the season.