Chelsea want long Andre Villas-Boas stay

The 33-year-old former Porto boss took over at Stamford Bridge in June. Buck told BBC Sport: "We do envy Arsene Wenger at Arsenal and Sir Alex Ferguson at Manchester United in terms of longevity, but it shouldn't be longevity for longevity's sake.

"It has to be the right guy in the job for 10 or 15 years and, in light of Andre's age, he may well be that guy." Buck added: "Everyone thinks his age might have been a negative but it's a positive."

Wenger, 61, is celebrating 15 years at Arsenal since his appointment in 1996. Ferguson, 69, arrived at Manchester United a decade earlier and, in November, will mark 25 years as manager at Old Trafford.

Gunners complete Gervinho signing

Arsenal have completed the signing of striker Gervinho from Lille for an undisclosed fee, reported to be around £10.5 million.

The Gunners announced last week a deal had been agreed and the paperwork has now been approved, with Gervinho penning what Arsenal would only describe as a "long-term contract".

Gervinho, who helped Lille to win the Ligue 1 and Coupe de France double last season, said: "It's a great feeling to be an Arsenal player. I'm very happy. I've always dreamed to play for this club. I've achieved this dream now and I am so happy. It's one of the most beautiful days of my life.''

Denilson urges Shakhtar star to sign

Arsenal midfielder Denilson has told Shakhtar Donetsk midfielder Willian to snub a move to Chelsea, saying his style of play would be better suited to the Gunners.

Willian celebrates a goal against Roma in the Champions League

GettyImagesWillian celebrates a goal against Roma in the Champions League.

Arsenal boss Arsene Wenger plays down captaincy issue

Arsenal boss Arsene Wenger has played down reports of a rift between captain Cesc Fabregas and Denilson after their 3-1 FA Cup third-round win at Leeds.

The build-up to Arsenal's replay victory was overshadowed by comments Denilson was alleged to have made about Fabregas not being a "born leader".

But Wenger said: "The report is coming back from Brazil and is not at all the spirit of the comment that was made.

"Either you have bad translators or good translators with a bad spirit."

He added: "Denilson and Fabregas are two very good friends and have a lot of respect for each other.