Rosler is convinced that Torres is trying his heart out for the Blues as he desperately attempts to rediscover the art of hitting the net on a regular basis.
Rosler, who cracked 52 goals in 150 league games for City in the mid-90s, said: "I saw Torres against Arsenal live in the stadium and his movement in the first 20 minutes was unbelievable.
"I was a striker who lived a lot on my movement but his was absolutely fantastic. And, at the beginning of the game, when everything went well for him, he seemed to be on fire.
"Then, unfortunately, he has one bad touch or misses one bad chance - like he did in the first half - and you can just see the confidence goes away from him and there's something missing.
"But Torres is a class player. He is a proven goalscorer and a proven world star. It's just that everyone compares him with Didier Drogba - and judges him on his £50m transfer fee.
"Personally, I just hope he gets off the mark again very soon - although not against us this weekend, obviously.
"But I really do want to wish him well and all the best because he works so hard. A lot of people forget that."