The question this week comes from John: “I have an assistant coach who regularly insists on working with the goalkeepers separately. What are your thoughts on separating the keepers from the outfield players?” Your Turn: Ask PDP Anything Do you have a coaching question that we might be able to help with? We would love to hear from you! Here’s what you can do: 1. Tweet your questions to us @playerdp, or contact us on our Facebook page.2. PDP Members can chat directly with the PDP team to…