We've missed the players who can link midfield to attack. Even when we had Lukaku as a focal point sometimes we just couldn't get it to him and played some great football over the first 2 thirds of the pitch - only to run out of ideas and lose the ball at the edge of the box.
Now we have Rooney, Klaasen, Sandro and possibly Sigurdsson who can provide those clever, defence-unlocking passes in the final third but we still do need a focal point.
It's the one missing piece of the jigsaw now. I know we have other areas we'd like to see strengthened (like CB and out wide), but a Giroud type player would really focus the attack and allow those link up players to support and be involved in the attack themselves.
This is where I expect Sandro to flourish. When he's not necessarily the focal point, but pulling strings and popping up where he's not wanted.
This lad has grade A movement. He's a professional Pest of the highest order.