Tottenham Hotspur sent the midfielder out on a season-long loan with the League One side in July.
The 22-year-old told the Spurs website: "It's a big season for me, massive, I know that To be fair, in all my previous loans apart from Yeovil I've ended up playing out of position and being in and out of the team.
"This time, I'm hoping to get 30 or 40 games in my position and off the back of that, score goals. It's much easier to shine in a team like this, with the players here who all want to get the ball down and play.
"I had one 90-minute game before I went into the first match against Peterborough, felt my hamstring and then it blew up on me on the Tuesday when we played Torquay. I was devastated at the time but thankfully I was only out for a couple of weeks. It was great to get back."
Mason scored a hat-trick against Crewe last weekend