The 27-year-old is again being linked with Barcelona this week.
According to The Daily Mail, the Red Devils midfielder has been scouted by the Catalans with Paris Saint-Germain midfielder Marco Verratti their No 1 option.
Herrera though is fully concentrated on his career at Manchester United and has no desire to leave this summer.
The La Liga side have also discussed ex-Tottenham midfielder Paulinho at Guangzhou Evergrande and Inter Milan’s Geoffrey Kondogbia.
Herrera has made 50 appearances during this season.