Mason said: “A lot of people have asked if it was a wrench to leave but the time felt right.
“I reached my decision to move on about two weeks ago. I didn't get any game time in the first two matches, and I'm the type who just wants to play football, so when the chance came up for a fresh challenge I accepted it.
“The opportunity arose to join Hull and I didn't hesitate. I went with my gut instinct and I'm happy I made the decision.
“It feels right and I've no regrets. Having the three lads from Spurs has helped me to settle in."