"I think I'm behind at the minute," said Henderson.
"Obviously, last season not playing so much and the other lads have done unbelievably well. I knew the best chance to do that was to come out and play football and being in Gareth Southgate's eye and hopefully leaving a good impression."
Henderson continued: "The talent in the group is something you really want to be part of. I honestly think England could win something big, soon. We obviously got close and are going to get closer. The players coming through just seem to be better."