Not a surprise here Pro Football Focus has just released their list of the 25 best NFL players under the age of 25 and, as you’d expect, Minnesota Vikings’ star wide receiver Justin Jefferson is pretty high up on the list. Jefferson checks in at #5 on the PFF list after two NFL seasons that have seen him accumulate over 3,000 receiving yards and 17 touchdowns. Here’s what PFF has to say about his performance: Jefferson burst onto the scene as a rookie with 1,400 receiving yards and seven receiving touchdowns, earning an elite 90.4 grade. He followed that up…