The break was a clean fracture, so should be fine. The 4.38 40 is sort of a rumour. Apparently his agent has tape of it that he will be sending to all the teams. There is reason to be sceptical of that time, but if its for real he may be the first or no less than the second WR taken, broken foot and all. The poster is right about his route running. Needs work.
If he develops into a good route runner think Andre Johnson. If not, Brandon Marshall. He is an unbelievable raw talent. What for the time being he gives up in route running he starts to make up for in blocking, at which he is extremely proficient.