Watford should have had a double-celebration when Roberto Pereyra won the Hornets a second-half penalty against Manchester United, in the view of head coach Marco Silva.

Marcos Rojo had already been booked before barging through the back of the Argentinian midfielder, moments before Troy Deeney scored from the spot to make the score 3-1 in the Red Devils' favour.

Silva felt the contact of the defender was enough to earn him a second booking, but none followed from referee Jon Moss - a decision which may have proved decisive in United's eventual 4-2 win.

He said: "When we scored the first goal we were already better, we scored the penalty and at that moment it looked like a second yellow card for Rojo.

"If it’s 11 against 10 it would be very difficult for them. It was difficult anyway because we scored the second, but if it’s 11 against 10 it would be even better.

"We believed even more at 3-2, made more problems, but there was one counter attack against us, where we weren’t in a good balance, and we should do things differently.

"Tom [Cleverley] should stop the counter attack, that’s when you need to do a tactical foul. The game will be open until the end."