Derby County will step out onto the pitch at Pride Park on Saturday for the final time in their pre-season campaign. The Rams have been put through their paces so far this summer, with Paul Warne learning plenty about his squad for the step up to the Championship. Opening victories against Matlock Town and Stockport County kickstarted the training camp, but defeats to Chesterfield, Shrewsbury Town and Barnsley have brought about plenty of questions for the Derby boss to answer. The final test of the summer will be against La Liga side Real Valladolid, with Warne looking to end on a high before…