No matter how much we love Chicharito, we all know that he is ineffective when he starts games. He should be used as impact substitite. If Rooney leaves, I am not sure if Lewandowski would be the answer though. Lewandowski is quite similar to van Persie and I am not sure if they would work well together. Rooney usually plays behind van Persie and provides the creativity. Maybe we should play Kagawa just behind van Persie if Rooney leaves? And then save the money for wingers and midfielders.
I think we have enough cover in defense. We just got unlucky that they all got injured at the same time. We currently have 5 central defenders (Smalling, Vidic, Ferdinand, Evans, Jones), 3 left backs (Buttner, Evra, Fabio) and 2 right backs (Rafael, Varela). 10 defenders are enough. Remember we just bought Varela and Fabio is back from loan.