I agree that Lautaro Martinez is a key player and his absence would be a huge loss for the team, but they would still not be left without chances. What is so strong about Inter Milan this season is the stability within their team straight through from the defense to the offense. It would weaken their offense and hence the entire game, but it would still not be easy to score against Inter Milan and that is something they are even doing better this year than last year. But in the Champions League obviously you always want all the best players to be healthy and available.
Losing him in the big match will become a big blow for club. In fact, martinez is playing the most important role. The club cannot rely on thuram. he is still performing so badly and he was also rarely scoring against any team.
Laurato martinez still becomes a key to win the game. I remind you that lautaro has been helping intermilan to play in the UCL final last season. Lautaro has learned a lot from his mistake and he tried to perform better by learning past experience.
I have seen some members above were saying if lautaro will be out for some weeks. I hope that's true or it's gonna be another disaster for intermilan.
The club sees him as someone who consistently scoring in any game. That's why lautaro is the top scorer in serie a this time. His instinct as a striker helped him a lot to score as many as possible against its opponent.
The loss in copa italia seems to give him a lot of lessons. Im also seeing this as a strong reason to keep him much longer in the club. Intermilan didn't have someone like him.
Im not sure if simeone will rely upon thuram when lautaro was injury.