Watford striker Andre Gray will require further assessment on a hamstring injury that forced him out of their 4-1 win over Preston North End.

The forward had recovered from a two month spell on the sidelines with an injury in the same muscle earlier in the year, but now looks to have had a further setback, after he limped out of the game after just half an hour.

While Gray's latest injury is in the same hamstring, initial observations suggest it is not a recurrance of the same problem, but head coach Vladimir Ivic did not want to say much more about when he may be fit and able to play again.

"We understood today that after two months out injured, Andre Gray played a second game," he said.

"Something's happened with the hamstring, I know that it's not the same position what he had. But again, I cannot say something more because I think it's the same leg, but it's not the same position of the other injury.

"We need to wait until tomorrow and to get information."

Ivic thinks that there is a greater risk of his players sustaining injuries this season due to the shortened pre-season and that he has been feeling the consequences of that since the campaign began.

Watford Observer:

"We have a lot of guys who didn't do the preseason," he said. "And in every three days, four days you have the games, you need to think who is ready to play, who is not ready to play and we know that we have a lot of players out of the squad.

"It's not just in this moment, it's from the beginning, from the first day. I don't remember that I had one game where I had the players to tell you that I have 90% of the squad."