Joselu's impact highlights how much we've missed a big, strong player to lead the line I reckon. Perez and Gayle are both far too lightweight as lone strikers and I don't think Perez is the right fit for the number 10 role in Rafa's standard tactics either. I know very few top teams play with the 'big man, little man' combo up front any more, and perhaps it's just me feeling wistful about the good old days, but I would love to see what Joselu or Mitro next to Gayle up there could do. The last time we had that kind of setup was probably Ba/Cissé, though they usually played as part of a front 3, and it worked really nicely. It's totally hypothetical of course, as Rafa will never deviate from 4-4-1-1!