depends on how many are eligible for practice squad. I don't know if Harbaugh has complete control over everything, you would think he would remember winning with White receivers, sure some of them were called tight ends but they ran routes just like a receiver. Ryan Whalen as a receiver, tons of White tight ends lined up in 2 and sometimes 3 tight end sets that Luck would pass out of. Never had a problem getting open. Lance Long has a chance to contribute and Jurovich has potential. I don't know much about the other two. Lance Long had 4.3/4.4 speed at his pro day and a great shuttle time. It takes some receivers a few years to develop. Even though he timed great in the 40 I remember Cardinals fans saying he didn't play like that on the field. For some reason fans get mistaken that 40 yard dash means 100 yard dash. If a player takes a play 40 yards but gets caught from behind he is considered having average speed. 40 yards is 40 yards. He might not run 100 yards fast but he runs 40 yards fast, and it is probably more front loaded.
Jurovich also ran a similar time, in the 4.4 range and other great measurables. I haven't really seen too much of either play except for a few clips, but apparently Jurovich has shown more on special teams. They are both around the same size, so that could be the deciding factor.
So I think one makes it, either Long or Jurovich and hopefully one of the others makes it to the practice squad.