The Northern Irishman was a standout performer for the Whites last season, and has seen his efforts rewarded with a fresh three-year contract at Elland Road.
Dallas has been a virtual ever-present during Leeds’ rise back to the top table of English football under Marcelo Bielsa, and took to life in the Premier League like a duck to water last term.
Now, with his future assured, he is eager to kick on again.
“It hasn’t seemed that long ago but when I sit back and think about everything that’s happened since then, it’s been a crazy journey, a crazy few years,” he said.
“Obviously I’m absolutely delighted to be signing a new deal, I’ve had what is it five seasons, six seasons now, I can’t even remember I’ve enjoyed myself that much.
“Football is a rollercoaster. I always believed in myself, that I was good enough to make a name for myself at this club.
"At times you don’t perform, that’s part and parcel of being a player, you have the set-backs to improve and keep learning.
“I’ll be the first to admit in the first few seasons here I didn’t perform as well as I could have and in these last few seasons the fans have seen what I’m capable of.
“This is where I want to be, I’ve always said that, I want to be at this club."
We’ve gathered the best of today’s Premier League speculation below…

7. Colley sale touted
Sampdoria president Massimo Ferrero is hoping to sell Omar Colley for around £10 million but Marcelo Bielsa’s Leeds United are yet to make a bid for the Serie A centre-back. (SampNews24) (Photo by Getty Images) Photo: Getty Images

8. Leeds want Nwakali
Leeds United are interested in signing Nigerian midfielder Kelechi Nwakali. Watford are also keen. (The Athletic) (Photo by Alex Caparros/Getty Images) Photo: Alex Caparros

9. Leeds reignite Madueke interest
Leeds United have reignited their interest in PSV Eindhoven sensation Noni Madueke. The youngster could cost around £20 million. (Football Insider) (Photo by MAURICE VAN STEEN/ANP/AFP via Getty Images) Photo: MAURICE VAN STEEN

