We need a complimentary player, a guy like what Cotchery was for us a few years ago. A reliable, cheap option that will compete with Salas for the fourth receiver spot, can come in and be reliable to play his part. We can either sign a veteran, or draft a developmental guy later in the draft, we don't need a superstar fourth receiver. This is assuming Harvin works out of coarse, if he doesn't all these guys should be on our radar.
Honestly I think its fairly obvious that we are set at WR assuming Harvin works out. Over the off season and including this deal we got two very good players, signed a reliable receiver in Kerley, and have established depth through the draft. Guys like Salas now have game experience and have proven they belong on an NFL roster. Going forward, at least this off season I see very little being done in terms of the WR position.