At the end of the season, the Inter Milan team was quite stable as a team. Despite not winning the Champions League or the Serie A title, Inter Milan was the most consistent team in Serie A at the end of the season. And so they don't need much change within the team. Too many changes could make Inter Milan's performances erratic again. Inter Milan should keep the attack and midfield unchanged. and buying experienced defenders to bolster the defence. Only then, I believe that this team will be able to perform well from the beginning of the next season.
Changes are always needed. Another question is that changes for the sake of changes usually do not lead to anything good. The fact that Inter had a stable end to the season does not negate the fact that before this end of the season the team was not so stable and Inzaghi's coaching work at Inter was in limbo, at least there were voices in favor of his resignation. The situation with Lukaku is also unclear. Inter with Lukaku and without are a bit different.