Watford head coach Marco Silva admitted his new side "must improve" after League 1 Wimbledon ran out 3-2 winners in the first game of his managerial tenure with the Hornets.

Two weeks after Silva and his players arrived at London Colney for pre-season training, the 39-year-old's Golden Boys were beaten by three second-half goals at Kingsmeadow.

Some managers may read into pre-season results more than others, but Silva said he was more concerned about the Hornets' performance in south London - and admitted they 'must improve' after their late defeat.

He said: "What we saw is what I expected. The result is not good for us, but normally in a pre-season game the result is not as important as the performance of the team.

"In this type of game we want to see how the players understand our ideas. We need to improve as a team and put in some hard work.

"I saw a little bit of what we are trying in the first-half and how we reacted after the second goal, but I didn't like how we started the second half and we lost our focus too easily."

The Hornets completed the signing of Nathaniel Chalobah on Thursday, and the 22-year-old was sat in the stands for the Hornets' first game of pre-season this afternoon.

With Will Hughes, Kiko Femenia and Daniel Bachmann also on board already, Silva is still on the look-out for new faces this summer, although unwilling to specify where those requirements may be.

He said: "The number of signings is not the most important things, but Gino the owner and Filippo [Giraldi, sporting director] knows the positions we need and what I want for a team, and we need to work hard in the market to improve our squad.

"I don’t want to talk about positions, I respect our players too much. We want to improve our squad, but we have good players who have worked hard over the past two weeks to show me their quality."