Watford are signing the Benfica winger Andre Carrillo who will become their eighth new arrival this summer as ambitious new head coach Marco Silva continues to overhaul the team.

The 26-year-old Peruvian international is expected to complete a season-long loan and previously played under Silva at Sporting Lisbon in the 2014-15 campaign when they won the Portuguese Cup.

Carrillo has struggled to make an impression since moving to Sporting’s city rivals Benfica last summer and his loan to Watford is expected to include an option for a permanent deal at around £13.5million.

Negotiations were ongoing on Thursday with Silva refusing to be drawn when he was asked about Carrillo beyond saying he is “a player I know very well”.

Watford have already signed Andre Gray, for a club record of up to £18.5million, Richarlison, Nathaniel Chalobah, Will Hughes, Kiko Femenia and Daniel Bachmann while taking up the option to sign Tom Cleverley on a permanent deal.