Actually, the figure of Lautaro Martinez is indeed a player who can develop better if he has the opportunity to play at another club in a bigger league such as the Premier League. But for now Inter milan certainly won't let one of their mainstay strikers go. Because currently Inter Milan is in the middle of a striker crisis. Even to prevent Lautaro Martinez from going to another club, it is reported that Inter Milan has set Lautaro Martinez's transfer price to be very high. I think the method used by Inter Milan is similar to that used by Napoli in keeping Osimhen on the transfer market.
Currently, it is reported that Inter Milan has set a price of around 150 million Euros for price of their flagship striker. However, it is reported that currently there are clubs from the Arab League who are interested in signing Lautaro Martinez. But fortunately Lautaro Martinez rejected the offer from the Arab club. Even though the salary offered by the Arab club is very high. But Lautaro Martinez decided to stay at Inter Milan. Of course, Inter Milan must thank Lautaro Martinez for deciding to remain loyal to the club.
I feel like if he does leave, it would not be for cheap and if they can sell him for a lot of money then they could end up with a good amount of money that can be used to get more players. Inter is not doing well financially even after a UCL finals and not buying players that would be great, they haven't spent all that much money even though they have earned so much money.
This is why I believe that the best thing to do for them would be selling Martinez and then using that money to get new players. Better yet, they should be using all the money they have made from UCL into the team already and not doing that right now, I feel like they should and that could be the most important thing that would be very good in the end.