From what i read Luis Enrique is a real motivater ala Guardiola so i hope he knows what to do.
I think Leo needs 2 months off and go back to how he trained in 2008-2011.
But i really think Leo was playing injured and just doesnt tell anyone.
Even if he has fitness issues i think Messi is going all out today, injuries be damned, If he doesn't then i would really be concerned for him.
I just want to see him bust his ass off win/lose in this game.
Go Messi, Imortality is yours, take it!