Without Lautaro Martinez, it will be very difficult for Inter Milan to win against Atletico Madrid. Inter Milan is a strong team but the key player in their squad is Lautaro Martinez. Scored 15 goals and 2 assists in 16 matches in Serie A. In every match we have seen excellent gameplay from Lautaro Martinez. Atletico Madrid is not a weak team. They have talented players like Griezmann, Depay, Morata and Correa in their attack. And so defeating this team will not be an easy task at all. However, Inter Milan's defense is very strong. Therefore, the Inter Milan team is considered as the favorite in this match. However, if Martinez is in the squad for this match, I've decided to bet Inter Milan to win.
So far we are only talking about the fact that Martinez will miss all matches in 2023, and these are matches with Lecce and Genoa, and what will happen next is unknown, but I have not seen any mention that the injury is so serious that he will have to miss the Champions League matches with Atletico, I think that by this time he will be able to return to the game. Against a defense like Atletico's, Martinez will be a very useful player.
Yes, it is very likely that Martinez will miss 2 matches at the end of 2023 against Lecce and Genoa, however Inter is still the favorite because Inter still has Hakan Çalhanoğlu and Marcus Turam who Inter can rely on to score goals and win. Moreover, Inter's defense is very strong so it is very unlikely that Lecce and Genoa will be able to beat Inter by breaking through Inter's defense even though Martinez is not in the team.
I hope that the muscle injury suffered by Martinez can recover quickly. There has been no further news regarding how long Martinez will be out, but I hope that Martinez can recover soon and return to strengthening Inter.