Why not put Brown on the IR and see what happens there first while allowing you to pick up another receiver? You also might want to consider picking up Leinhart if he's available. He should have better numbers than Grossman and Hasslebeck. Hasslebeck's going to struggle without a running game and I'm just not sold on Grossman yet (I could be wrong).
_________________________
Hoosier by birth, Red Raider by choice... like KNIGHT and day.