The Blues are still interested in Alexandre Pato, David Villa and Wesley Sneijder, while they have not given up hope of buying Franck Ribery from Bayern Munich.

Ribery insists that he wants to join Real Madrid but the Spanish club's general director, Jorge Valdano, claims they are not prepared to meet Bayern's £70million asking price and have pulled out of the race to sign him.

Chelsea boosted their squad strength with the arrival of Ross Turnbull on a free from Middlesbrough and Manchester City's Daniel Sturridge for a fee to be decided by a tribunal.

Left-back Yuri Zhirkov has joined from CSKA Moscow for £18million on a three-year contract.

But Buck says their summer spending is far from finished.

"We said before the transfer season started that we expected four or five players in and a couple out," said Buck. "That is still our expectation. We are looking for a marquee name and are chasing a few but most of the big clubs are chasing the same players.

"We are only going to get one of those top-notch players if the price is right and he fits into our team appropriately. But we are optimistic.

"We think we know the right price for these players and there is still a lot of time left in the transfer season so let's see how things work out."

Buck also remains confident that captain John Terry, a target for Manchester City, will stay despite reports that the defender wants 'showdown' talks with owner Roman Abramovich.

Terry is on £135,000 a week and wants Chelsea to offer him an improved contract with Manchester City willing to offer him around £200,000 a week.

"As a Chelsea fan I'd be devastated if John left but that's not going to happen," said Buck. "John Terry is synonymous with Chelsea and Chelsea is synonymous with him.

"He has been here since he was a wee tot, he is captain of the club and captain of England. He is the backbone of our team and is not leaving."

Buck remains adamant Chelsea's managerial merry-go-round is over with the appointment of Italian Carlo Ancelotti.

Ancelotti is Chelsea's fifth manager in the past two years and they are desperate for stability.

The Blues have not lifted the Premier League crown for three years and remain dedicated to winning the Champions League.

Buck admits Ancelotti will be expected to make Chelsea challenge for at least two major trophies this season but adds that he will be given time to settle in.

"We were looking for a manager who would build for the future and win many trophies for many years to come," added Buck. "He was the outstanding candidate.

"Carlo has been a very successful manager, winning the coveted Champions League.

"He has also been a very successful footballer himself so we think he has all the characteristics to bring us success for the long term.

"The goals for next season are pretty much the same we set every year, that come 15 April we'd like to be in contention for two or three cups. If he gets us there we will be satisfied, if he gets us further and wins a big cup or two we will be very satisfied."

Chelsea pair Ricardo Carvalho and Deco look set to stay at Stamford Bridge for the time being.

The Italian club's transfer consultant, Lele Oriali, said: "Having had the fortune of being able to speak directly with Chelsea, we know they are ready to negotiate over these two players but the asking price is too high.

"The deal is not as simple as it might seem. It's unrealistic for us in the current conditions. At the moment the deal is closed and we don't know if it will open up again."

Meanwhile, former Chelsea midfielder Ben Sahar, who made just five appearances in three years before being sold to Espanyol for £1million last month, says his boyhood dream has been shattered.

"I dreamed of playing for Chelsea's senior team," said Sahar. "I wanted to play at the highest levels but reality turned out differently. I arrived at Chelsea at a young age and never really had a chance to become part of the senior squad.

"Somewhere along the line the Chelsea dream shattered but I hope this dream will take me to other places. Maybe in the future it will come true."

Chelsea's new goalkeeper Ross Turnbull was officially unveiled by the club today and immediately insisted he had not joined the Blues just to make up the numbers.

Turnbull quit relegated Middlesbrough after he decided to let his contract expire this summer.

Now he is relishing the chance to challenge Czech Republic international Petr Cech and his number two, Hilario, next season.

"It's a squad game and I am here to be part of the squad and push Petr Cech and Hilario all the way and make that spot mine," said Turnbull. "I have not come here to sit on the bench. I want to play.

"Cech is one of the best in the world but it is up to me to work as hard as I can. It is not going to be easy but I will have to take my chance when it comes along.

"It is a fantastic move for me and it was not a difficult decision to come here. I am still a young goalkeeper and all I can do is improve."