At the moment, Inter are busy negotiating contracts with a lot of players.
Among them, the most divergent, the most difficult, and the least likely to succeed is Perisic's contract extension. Among the current Inter 11 main players, the biggest departure next season is likely to be Perisic.

Perisic has performed well this season, contributing a total of 4 goals and 2 assists in the league and champions league.
More important than the data, he proved that he was the real Mr. Big Scene in the strong battles against Lazio and Napoli, the matches against the "nemesis" Sassuolo, and the Champions League qualifying showdown (against the miners).
In addition, Perisic also played a very positive role in terms of professional attitude, tactical value, mentoring newcomers (Dumfries).
A few years ago, Inzaghi Jr. never hid his love for the Sabre, and now, the Inter coach also hopes that the Sabres can renew his contract.
However, the divergence between the players and the team is simply too large.
Perisic wanted a 3-year contract with an annual salary of 6 million euros after tax.
Inter's proposal is a 2-year contract with €3.5 million after tax.
Labor and management are too big differences, and it is extremely difficult to achieve mutual compromise through bargaining in the short term. So Inter's current strategy is to put aside Perisic's contract extension negotiations for the time being and postpone the problem to February or even later.
There is no way around this. Although postponing negotiations will not solve the problem fundamentally, it is better than forcibly advancing negotiations, the two sides falling apart, or even turning faces, and completely losing hope of retaining people.
The team and the players have left room for each other, in the words of the Italian media, "Perisic and Inter, both leave a window for each other".
In short, whether Perisic can stay in the team next season is very variable.
So Inter is indeed laid out on the ball market, and the layout has been relatively deep.
The current favourites are two: Digne at Everton and Kostić in Frankfurt.
Inter are making two-handed preparations, and it would be better if they could be introduced in the winter window. Perisic is missing a rotation this season (Di Marco is also going to go to left centre-back to fill the gap) and there is a real need for reinforcements.
If the winter window does not work, it is also possible to finalize the introduction of the summer window in advance, which will also make Inter more confident to negotiate with Perisic.
Digne at Everton is no longer in the manager's plan, and the player team is actively pushing for a transfer in the winter window. Inter have been in contact with the players, and The Milan Sport revealed that Osirio and others are optimistic about their willingness to join Digne personally.
The problem is on Everton's side. Inter can only offer a loan + selective buyout, and it is not easy to say whether this offer can be approved. The Toffee wants to sell directly for money, or at least a forced buyout clause.
Compared to Digne, The Costich is a bit lower (buyout price). The player's contract expires in 2023 and player agent Luci is currently one of Inter's best-connected agents.
Lucci has made two public visits to Inter's headquarters in the past few months, and sources believe he and Inter managers have spoken about Kostic more than once. The player submitted a transfer application half a year ago, and the willingness to join Inter is relatively strong.
Market experts believe that the price of Kostic will not exceed 15 million euros (rental fee + buyout fee + float fee). "Milan Sport" believes that 12.5 million may win players.
If it is Digne, the buyout price may be around 25 million euros.
In an interview at Christmas, Inzaghi Jr. said that if all four strikers stayed in the squad, he personally hoped to gain something in midfield or on the flanks. At present, Inter have prepared a variety of plans on the flanks, and if Kolarov leaves the team to free up places, the team may move.
As has been proven countless times in the past 1-2 years, inter's transfer team is well-connected, diligent and dedicated, and has done a solid job. When the team has the need for reinforcements and the conditions for reinforcements, the team never needs to worry about "signing people", and the problem of worry is always "sending people away", this is the situation.