Chelsea's players report back from their holidays next Wednesday and Villas-Boas insisted every one of them would be given the chance to prove they deserve to remain at the club.
Dismissing rumours linking midfielder Essien with a move away, he said: "I'm more than happy with the actual squad.
"It's nothing new that, when a manager comes, radical changes are expected.
"We have plenty of time to judge the market.
"There's no fuss in the changes we might need to do or not. The guys have to feel important.
"They're top quality players, and I want to see them back so I can start taking decisions."