Townsend has urged United to complete a deal for Jadon Sancho.
Speaking in an interview with talkSPORT, Townsend said: “Jadon Sancho is a world-class player, potentially a future a Ballon d'Or winner.
“Paying £110m for a player of his age and his quality, I think he's more than worth that.
“He's English, he's young, I think they're getting a bargain if they are getting him for that price.
“Obviously he's going to bring a lot of creativity, he's a very fast and skilful player, he can play on both wings, he's two-footed, he's played oversees so can handle that pressure of leaving his family.
“He's got it all for someone of such a young age – he's only 20. 'Like I said before, he's a world-class player and at £110m I think Man United are getting a very, very good bargain here."