Mascherano is a little misguided there.
We're angry because Torres was a hero, he pledged legiance to the fans and supporters a little over a month before he left. And he also left us for the Rent boys. He's played shite all season, and last yet we still supported him. We hate him because we love him. AND CHELSEA?! Many other arguments too, which is a little different to Mascherano leaving.
No one bars any grudges to Mascherano. Yes the club might have been dissapointed, but i can only recall positives things said about him on here and around Anfield, he still remembered effectionality.
On a personal level, what a stupid move it was from him. Barring injuries he'll never get into that Barcelona team. Ironically we were probably his rite level.