By Tom Gott Gareth Southgate has revealed left-back Luke Shaw could feature for England in their Euro 2024 opener against Serbia on Sunday evening. Shaw has not played since suffering a calf injury in February and Southgate has openly admitted that including the Manchester United left-back in his squad for this summer’s tournament was a huge gamble. The boss had previously tipped Shaw to return later in the group stage but, ahead of Sunday’s opener, Southgate confirmed he has a full bill of health to work with. “Everyone’s available,” Southgate said. “We have a decision on whether Luke is a po…