Marko Marin believes that Chelsea possess enough quality in their squad to retain their Champions League title this season and also add the Premier League title to continental honours.
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Marin finally made his debut for the Blues on Tuesday in a Carling Cup thrashing of Wolves, almost five months after putting pen to paper on a move from Werder Bremen.
The Germany international agreed to sign for the Blues before their Champions League triumph over Bayern Munich and has watched as Roberto Di Matteo has welcomed the likes of Oscar, Eden Hazard and Victor Moses as competition for a place in the Blues' starting line-up.
And with Chelsea now boasting a wealth of attacking talents, Marin believes the club are ready to challenge for top honours again.
"If you are to win the Premier League and Champions League, you need a lot of quality players," Marin said. "Chelsea have changed a lot since last season and now we have more attractive and offensive players.
"We hope that there are a lot of goals in this team because then it is more difficult for the other teams to play against us.''
Arsenal are also being touted as serious title contenders this season, having recovered well from the sale of Robin van Persie to Manchester United, although Marin feels it is "difficult to say'' if the Gunners were genuine rivals.
"They have a good team but they lost Van Persie, who was the best scorer last season,'' he said. "I'm not sure they have played against a good team like us.''
Chelsea are likely to come up against Marin's Germany team-mate and fellow Premier League new boy Lukas Podolski, who has not taken long to settle in north London.
"I know Lukas from the national team and at the beginning it was all new to him but now he is doing well and has scored a few goals,'' Marin said. "But we have a very good defence and Branislav [Ivanovic] will do very well at right-back. It will be hard for Lukas to play against him.
"Of course I am very confident [Chelsea can keep him quiet]. I know Branislav very well, he is one of the best defenders in the Premier League. I am not scared about this.''