The first question to be asked is: Are we in need of those strikers?
Look at Inter, they have a shitload of them, some of them are good some are little better. Undeniably Martins and Adriano both are great strikers who will be welcomed by most top teams around the globe. The same goes to the others. But the problem arise when you have 5 or 6 players in the same position as you, and although it's should give you a motivation to work harder and to improve, it's unhealthy for the team. Every single one of the Inter forwards is a national team player, so they demand a placement in the starting 11. I would prefer a current situation with 4 available strikers, and with Kaka as a 3rd option (with 2 playing forwards).
And just for a speculation and to add something:
1. Carlos Tevez (Boca) - I am not a latino or Boca fan, but i saw this guy playing and he worth it.
2. Chevanton (Lecce) - Agree with everybody else. Should be a good signing.
3. "Bobo" Vieri - You all know this so no need to introduction. What I like in this guy, is his presence in the box. If he is there, ther is almost a constant danger. Unfortunately he is old (32?).
4. Yossi Benayoun (Racing Santander) - He is not a striker, but he can play at the same position as Kaka and Rui are filling today. Real talent improved a lot since the last year.
Why in the whole world we would need Corradi or Bazzani? IMO they are not good enough, comparing to strikers we have at the moment.
