Ashton is well suited to the EPL; he is physical and good in the air and it is this we would need to replace if Mido moves on as I don't think our other strikers offer enough in these respects.
Maybe Pekhart can step in but it would be a big step up. Only the coaching staff will know if he is ready for the first team, but I would be surprised; would we really want to depend on such inexperience in the event that Berbatov was out for a spell. I would rather see him eased in - sub appearances, an odd game here or there in early rounds of the cup competitions. I imagine he is another season or so away being a first team regular.
Should Defoe or Keane be replaced this summer so that we have a strike partnership that could work without Berbatov, then I would be more comfortable with the idea of Pekhart stepping up, as he wouldn’t then be second choice to Berbatov (as he would be if we kept Defoe and Keane) but a true fourth striker.