The defender is eyeing a spot for Euro 2016, but knows he faces stern competition for it.
The Saints full back has become the number one option for Roy Hodgson’s side in this international break, featuring in the loss to Spain.
The position is very much up for grabs at present, with Luke Shaw out injured and Leighton Baines yet to return from injury.
It has been a strong return from Bertrand after failing to break through at Chelsea, and he praises manager Ronald Koeman for providing him with the steady base to build from.
“I just needed a foundation of consistent football and that’s what I went looking for,” the Daily Mail reports him as saying.
“At Southampton, with Ronald Koeman as the manager, I found that. He really lets me express myself and play my game, put my stamp on games and not just participate.”
With Baines set to return for Everton in the near future, it is widely expected he will be the starting left back at Euro 2016.
However, Shaw’s injury is likely to see him miss the tournament, meaning there is still a place to compete for in the side.
The competition is fierce though, with Kieran Gibbs and Danny Rose both currently competing, while the likes of Aaron Cresswell could also stake a claim.
And Bertrand accepts he has a chance of making France next summer, but is instead focusing on building up some consistency before focusing on that.
‘I’ve possibly got an opportunity for the Euros,” he added.
‘I just want to continue and concentrate on each game, each friendly game. We’ve got big tests coming, starting with France on Tuesday. It is important that we keep consistent as a team, in my performances too.”