Silva was relegated from the top flight on his last and only previous trip to Selhurst Park, a 4-0 loss as head coach of Hull City last season, but the Portuguese has put measures in place in the hope of a different outcome this time around.
"We need to be careful with Zaha," Silva told Watford's official website. "He's a good player, a player with very good talents. We'll pay attention to Zaha, to [Andros] Townsend, to [Ruben] Loftus-Cheek like Palace will pay attention to Richarlison, [Troy] Deeney, [Andre] Gray, [Andre] Carrillo and [Roberto] Pereyra.
"It will be a tough match. They have improved since Roy Hodgson arrived. In one moment they can solve the solution but we go there to compete, to take a good result."