Messi is still the best player in Barcelona. Messi started his career in Barcelona and dedicated his youth to Barcelona. For Barcelona fans, Messi is the totem of the team. Although Messi is now 30 years old, he still plays a key role in Barcelona. The inaction of Barcelona management led to the decline of Barcelona's competitiveness, which made Messi disheartened. He wants to compete for more honor. When Messi was present, Barcelona performed much better, and Barcelona could not do without Messi.
It is difficult for Barcelona to find a replacement for Messi. In the past, under the leadership of Messi, Barcelona won the championship in these years. He is the player with the most appearances in the history of Barcelona. Messi conquered all Barcelona fans with his personal ability. Messi is irreplaceable in the eyes of fans. He is the king of Camp Nou. Barcelona has been looking for a replacement for Messi, and signed players such as Dembele and Griezmann, but found it useless and failed to reach the height of Messi. It is impossible for Barcelona to sell Messi to rebuild the team, because the club's top management knows that Messi is not for sale in Barcelona.
Messi's strength has not dropped significantly. There is no need to rebuild Barcelona now, and Messi can still dominate the stadium. Barcelona's top priority is to persuade Messi to stay. If Messi leaves the team, it will have a huge impact on the team. It's hard to imagine Barcelona without Messi. After all, Messi has no team to fit in. Messi's performance is the best in La Liga this season. The club should find some powerful helpers for Messi to help him win the Champions League.