By John Cross Gareth Southgate insists he hopes there will be no public backlash against Ben White despite going public over the Arsenal defender’s England snub. Southgate admitted he would have lost “credibility” had he not explained White’s absence from yet another England squad considering his outstanding form for Arsenal this season. Gunners technical director Edu rang his FA counterpart John McDermott last week to tell him that White did not want to be picked in the last squad ahead of the Euros. Arsenal then quickly rushed out a super-positive club video about White signing a new contrac…