Meslier was only a teenager when he became the Leeds number 1 towards the end of their promotion campaign in the Championship and has remained the first choice since then.
Bielsa never lost faith in him once he broke into the line-up and played a key role in his development until being sacked by Leeds last year.
Meslier conceded that being a goalkeeper in a Bielsa side was very hard given the way the team played their football and it inevitably exposed him to more shots on his goal because of how open they were.