According to Spanish sources, Casemiro (Real Madrid) in an interview with Panenka on Barça's situation said:
"Barça must adapt to this new reality [without Messi]. And Barça will do it, for sure just like Real did. Because these clubs are the biggest in the world and have always had the best in history."
"His absence is noticeable, everything he represented for Barcelona is noticeable. He is a player with whom everyone falls in love after seeing him. If you love football, you love Messi. He is among the top three in history."
"After leaving Barça and, at this moment of transition, you can see how important Messi was for them. That is why he is an icon of the club."