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A lot of people are enamored with Zach Brown's speed, but it takes more then just a fast 40 time to make it as an outside linebacker in the NFL. You have to have great instincts and the ability to make tackles in the open field. You also have to be a physical player to make an impact against the run as well.
Brown is very, very fast. He ran a very fast 4.47 at his pro day. He has the potential to be the type of linebacker that can shut down even the most athletic tight ends in pass coverage. He hasn't proved that to be an inevitability on film yet.
The problem I have with Brown is, he doesn't possess good football instincts and isn't a very physical player either. When I watch him on film, more times than not, the ball-carrier he is attempting to tackle is pushing him backwards. It should be the opposite for a linebacker. He also gets fooled on play action and misdirections far too often.
Ernie Sims was a very similar player coming out of college. Exceptionally athletic, but didn't possess the instincts needed to be a good starting outside linebacker. There are some really good outside linebackers available later in the draft that aren't as fast as Brown, but are much more physical and have better instincts than Brown does.
If he is available, which he wasn't in this mock draft, I would like the Eagles to draft Mohamed Sanu out of Rutgers. Sanu isn't a deep-threat type of wide receiver, but he is very quick, runs very crisp routes and catches everything he gets his hands on. He is exactly the type of receiver the Eagles don't have but very much need.
Brian Quick, a wide receiver out of Appalachian State, is available in this mock draft. He is a good red-zone target for the Eagles. He is listed at 6'4", 220 pounds and is a good leaper, as he proved at the combine with a vertical jump of 34 inches. He is a former basketball player, which is shown on film when you watch him fight for throws in the air.
He should be able to make an immediate impact for the Eagles in the red zone.