Speaking on Rio Ferdinand's podcast, Michael Owen said: "Mason Mount is obviously a top class player. I think he is a very good signing.
"Obviously they have paid the 'going rate' and I think it's a decent chunk of money but he is young, he's English, he is going to be there for a very long time.
"He is obviously a very good player. I don't think anyone can complain with that signing, it is a very solid signing and you know what you are going to get."
Manchester United paid £60 million to sign Mount from Chelsea this summer and the transfer has become a laughing stock among rival Premier League fans.
The 24-year-old midfielder has scored zero goals and provided one assist in six games across all competitions, leading to calls to drop him from the starting XI.