Thousands of Oxford United fans swarm on to the pitch to celebrate promotion following their victory over Wycombe Wanderers last season Picture: Naomi Herring WHEN it comes to looking ahead to 2017 on the field, the biggest challenge facing Oxford United is how on earth you can follow-up 2016. As far as problems go, it is not a bad one for Darryl Eales to ponder after a 12 months where potential turned into success.