“Of course, we want a normal number in our squad and we are working on both sides,” Silva said.
“Of course, after the next weekend I will start taking some decisions as well because we will have finalised the third week of pre-season and that is the moment to take some important decisions about our players as well.
“And we expect in the next few days the new players we need will start to arrive.”
“I'm confident,” Silva added, on landing his targets.
“If you ask me, in a normal situation it is not the perfect situation because this season the market will close early, this is new for us.
“In a normal situation we have maybe already signed one or two players, we haven't signed anybody yet but we have until the end of the market to sign our targets and it is something we have to do because we need and we need to give a signal for our team and for our fans what we want for the season.”
Everton are one of only three Premier League clubs yet to make a signing but the Blues boss added: “We know and it is clear for us what we need.
"It's clear for me as well, our board and our owner, it is clear they know what we need. It is clear what our targets are and where we want to improve our squad well.
“Of course, the boys are working well and are working really hard but, like all the other teams, we want to improve our squad and be more competitive as well.
“But now we are working and they know what we want and what we need.”
Everton have already sold Ramiro Funes Mori and Wayne Rooney, allowed Joel Robles to leave on a free and sent Luke Garbutt out on loan.
But Silva says he does not need to sell more players in order to start this summer's signings.
“The challenge is a normal thing, we are here to take decisions to improve our squad, the get Everton better and better because we have to do this,” he continued.
