I don't know but as stated we've got a fairly low starting point.
I do know also that a striker isn't the only player we need.
1. Mobile Cb. Ball playing Cb. If we can get one player who does both great.
2. Deputy / replacement for both full backs. Youth, pace and the ability to cross the ball needed.
3. Forward thinking central midfielder. We have plenty of energy and plenty of safe sideways merchants, we need a string puller desperately.
4. Pace. I know bolassie is due back, but a natural widemen capable of playing at pace and committing opposition defenders are absolutely vital in the prem. Zaha would be my first choice, Redmond plan B.
I suppose whoever we get in will need what he needs, he may have a different view on the squad or whatever, but from a squad building POV youth, athletic ability and pure pace will always give you options to shape something with.