Newly-signed Tottenham defender William Gallas says it was a tough decision to leave Arsenal for North London rivals Spurs.
The 33-year-old signed a one-year deal with Spurs after four seasons at Arsenal, but fell out of favour at the Gunners after missing most of the start of 2010 through injury.
Now the Frenchman says he is looking forward to getting back to full fitness and making his mark at White Hart Lane.
"The atmosphere is great here. I like that and I'm just looking forward to playing as soon as possible and winning some games," Gallas told the Spurs website.
"It was not an easy decision [having played for Arsenal] but I am here now and I will give my best. What is most important to me is to play games and to give everything."
"I just want to be fit as soon as possible, train with my team-mates and play matches. I want to show everybody I am still here."
Gallas is in contention to play for Spurs in their historic first Champions League home match against Swiss side Young Boys on Wednesday.
Spurs fought back from 3-0 down in the first leg to finish the match 3-2, and Gallas was confident Tottenham could overturn the deficit in the second leg.
"Spurs are ready for the Champions League, even though they lost the first game. I have seen the game and the team showed character to come back," he said.
"I am confident we will win that game on Wednesday because all the players know it is very important to play in the Champions League."
Harry Redknapp's side finished fourth in the Premier League last season, and Gallas, who won two EPL titles in his time at Chelsea, said Spurs were more than capable of improving on that performance this season.
"Finishing fourth last season shows Spurs have improved a lot and I hope this season we are going to finish even higher, maybe even win the Premier League," Gallas said.
"We just have to believe in ourselves. We have got young players with great quality, they just have to believe in their capacity to do something and I hope we can achieve this."