The Manchester United veteran has been impressed with the quality of Roberto Di Matteo's side and believes that it will be a tough challenge for the Red Devils at Stamford Bridge
The Welshman is wary of the hosts' creativity but is confident that Red Devils forward Robin van Persie can cause them trouble at Stamford Bridge.
Giggs told the Times of India: "They are a talented team and they have changed their personnel a bit – they’ve got Oscar now and [Eden] Hazard. Juan Mata is also playing well and I think Fernando Torres is an in-form striker.
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"You know you are up against a very good team when you play Chelsea. They always have that experience and power. They have changed it a little bit with the lads they have brought in - [Hazard and Mata] are hard to pick up. So it's changed a bit but it’s still going to be the same game against them – going to Stamford Bridge is always going to be tough."
Despite the challenge the Red Devils face at Stamford Bridge on Sunday afternoon, Giggs feels that Van Persie can make a difference - but admits that he was surprised to see the former Arsenal man sign for United in the summer.
The veteran said of the Dutchman: "He's certainly an asset to the team. He's a world-class player and his performances over the last few games have shown that.
"It’s interesting because the manager's policy in recent years has been to buy young players and develop them – like Wayne Rooney, Cristiano Ronaldo ... but Robin is ready-made, he’s a world-class star and he's shown that already this season."