Agreed we need a safety and DT. Not sure why you think we need a WR though
I don't want to put words into LH's mouth but I'm guessing he's referring less to a need for a WR and more to the idea that if a great one wants in, you take him.
The WR position has significantly high stand alone value at the college level, much moreso than the professional level. If an elite level talent kid that a University like ours wouldn't normally be in on wants to sign, you pretty much take him regardless of the depth chart.