Herrera makes De Gea vow

Man United midfielder Ander Herrera had vow he will 'do everything possible' to ensure teammate David De Gea will not join Real Madrid this summer. 

"Maybe I am a bit boring on this, but I always say the same," Herrera is quoted as saying by Cadena Ser.

"David is one of the few keepers who give you points over the course of a season. I prefer to have him with me, so I will do everything possible to have him here."