I think Mascherano will score if he found himself near the edge of the box, especially if the ball is weighted towards him inviting a shot. He does have a powerful shot and from the edge of the box can score.
Sepp Blatter also said recently that Spanish League is the best league in the world. His point was that not even a single player from EPL made it into the FIFA pro Xl.
I think Milito is staying..that's what Zubi said most probably. But even if Milito stays, Adriano should be the first choice to play at RB in absence of Alves.