After an incredible start to the season, the Hornets are now nestled amongst the Premier League's middle tier clubs and teetering dangerously on the edge of dropping further down.
A 3-1 loss to Manchester City was sixth out of their last seven games, and Silva insists new talent must be brought in to rejuvenate the squad.
"Yes, I hope. We are working. The board know what I expect.
"It's important with problems we have, if I have more players available for the next match it's important for us.
"I've got to work with the players in the squad and develop and improve them though. But I hope we can improve."