(David Maialetti/Staff Photographer) Eagles executive vice president of football operations Howie Roseman (left) and head coach Doug Pederson. WHEN THE EAGLES began onfield work this spring, the two biggest areas of concern were wide receiver and cornerback.
As minicamp wrapped up Thursday, ending drills at NovaCare until training camp starts on July 24 for rookies, quarterbacks and selected vets, there seemed to be strong reason for optimism at wide receiver, where the quality of play was much higher than in spring work a year ago - even if all the new additions to the unit hadn't completed the work of syncing up with quarterback Carson Wentz. But progress at cornerback was harder to…