Manchester United will not buy or sell any players during the January transfer window, according to their chief executive David Gill.

The Premier League champions have been linked with a £30 million move for Tottenham Hotspur striker Dimitar Berbatov but Gill insisted they would not look to improve the squad until the end of the season.

"I don't think there will be any purchases in the transfer window," he told the BBC.

"We invested heavily last summer and believe we have a very good squad that can really go for the honours in the balance of the season.

"We will assess in the summer as well always do and see where things have gone well and not so well, and see where we can strengthen."

Gill sought to ward off any interest in their in-form duo Cristiano Ronaldo and Wayne Rooney, saying that United have never been a selling club.

He said the only major players sold in Alex Ferguson's reign - such as David Beckham and Ruud van Nistelrooy - were those the manager was willing to let go.

"We made it clear Cristiano would never be for sale. Wayne and a number of other key players fit into that category," Gill said.

"Rooney is a world-class footballer and 22 years old, not only a great player but very popular around the club. He absolutely loves the club and we will make sure we keep him for many, many years."

Gill also rubbished reports that Louis Saha will miss the rest of the season with a knee injury.

The fragile Frenchman has made just 50 league starts in four years since joining from Fulham, and underwent knee surgery in the summer.

However, Gill said the 29-year-old had not suffered a recurrence of the same injury, describing the latest setback as: "A slight knock - he is certainly not out for the rest of the season."

Alex Chick / Eurosport