The Blues fell again this week to Hamburg.
"It was a good game, a difficult one because we had a lot of hard training sessions in the last few days," said Anelka. "It was a good game, it's a shame because we conceded two rubbish goals but what can I say?
"I think we are improving in our play, we played well in some parts, and I hope we will be okay for Manchester United on Sunday."
The Frenchman, who played the first half in a central attacking role before switching out wide to accommodate Didier Drogba in the second half, was playing only his second game of pre-season and believes it will be a fortnight before he and his team-mates are firing on all cylinders.
"I think we will be ready in two weeks, we are working a lot in training but it is very difficult to play this kind of game, it is very hard after the training, and I think we will be okay soon," he told the Official Chelsea Website. "Hamburg is a good side, they played some good football, it was a good pitch and a noisy stadium, and I think it was a perfect game for us to end our pre-season."