Giroud still has the chance to play in Serie-A, but the physical factor that is easily affected by injury makes Giroud have to be careful when playing. if there is an accident on the field, as was the case with Ibra, Giroud will take longer to recover since the age factor and the frequency with injured history so far. However, if he manages to protect himself from potential tackles or body charges that injure him, I think Milan have the chance to play Giroud longer.
Giroud's performance during the World Cup was quite impressive. He scored 4 goals to help France be in the final. But unfortunately, he only got 40 minutes of time in the final because France failed to develop their game. It's true as you said, Giroud still has the chance to play at Milan for a little longer, he's still good as a striker.
Age will indeed affect his physique and fitness, it will also affect his performance. But this season, Milan can expect him to play at a great level until the end of the season.
Since he joined AC Milan, he has not given the maximum game for AC Milan. This season he has played 13 matches, creating 5 goals and 3 assists. Actually he can do more than that, but I don't think he's very comfortable playing there. I mean, there hasn't been any chemistry created so optimally that it's disrupting his performance.
He did well in the World Cup, I want to see if he will do better too when he comes back into the team or nothing changes at all.
There is no doubt that Oliver Giroud is one of the premier players in the world. It is likely that he will be able to provide significant contributions to the team. In the final between Argentina and France, it would be fair to say that he did not contribute much to the attacking. However, I saw him defend when they were defending corners against Argentina.
In addition to that, you know, he did a good job of it as well. It is the fact, however, that he is not in the team for his defensive work. He is in the team for his attacking work. So, if he is not able to do that effectively, it is a problem.
Due to the fact that he is very old at the moment, the possibility of any injury being fatal to him is very high. However, if he can maintain his health, he can be a very effective player.