LONDON - Manchester United veteran Ryan Giggs, one of the most durable and decorated player of the Premier League, turns 40 on Friday.

His stability of playing shows no signs of decline of his career.

Giggs' performances remain a high standard and the club's manager David Moyes believes the Welsh midfielder could continue to play on next season.

Serving as an assistant to manager, Giggs played 90 minutes and functioned the driving force in the United's devastating 5-0 victory over Bayer Leverkusen in the Champions League on Wednesday.

Giggs doesn't see himself quitting any time soon. He has undertaken regular yoga sessions since turning 30, which now is seen as an accepted method of keeping in shape.

He has also refined his game, playing deeper in midfield rather than on the wings. He relies on speed of thought rather than the speed of his legs.

His first-team career with the United will reach 24 years if he extends the contract.

It will be Giggs' 953rd club appearance against Tottenham in the Premier League on Sunday for the United since his debut in 1991.