I got one of the ages wrong Anderson is actually only 28 now. Not that it really matters.
A few of them like Anderson, Fletcher and Fabio, maybe Buttner as well definitely needed moved on but Van Gaal sold way more than he had to in too short a space of time. The likes of Rafael, Evans, Evra, Nani, Welbeck, Kagawa and Hernandez are still more than good enough to be useful members of last seasons squad. And going off last seasons showing a few of them would be in the first XI.
No doubt a lot were moved on because they didn't suit Van Gaals possession philosophy, but LVG in hindsight did a terrible job of reshaping the squad. Sold good players for a pittance and spent hundreds of millions on others and i honestly don't think the squad he left was all that good certainly not better than the one Ferguson left in my opinion. Bar Smalling and De Gea who were already here, Martial a rare good buy and the emergence of a few good young players form the youth system not many of the current squad have been in great form.