Mata said he felt sorry for skipper Terry because his name is frequently dragged through the mud publicly.
"Obviously it got to him, having his whole life unwrapped in public," explained Mata.
"You're talking about a man who has no private life left and that is sad because the guy I see every day going flat out in training does not correspond to the image peddled in the press.
"If you need help with anything, John is always there. And even if he has made mistakes, does he have to be reminded all his life? Everyone makes mistakes."