Bertrand was a regular for Southampton in the Premier League this season, and has won the Champions League with Chelsea, but has seen Danny Rose go to Russia ahead of him. The Tottenham player made 10 appearances.
"I played wing-back in a five at the end of the season, which is how England play," Bertrand said to the 'Daily Mail'.
"I also played in a central three for Southampton with Virgil van Dijk and Jose Fonte, and we went on Southampton's record clean-sheet run, six on the bounce.
"I played left midfield in a Champions League final for Chelsea. It is perhaps an oversight in the manager's analysis and I find that hard to take."