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…
. LEEDS, ENGLAND - MARCH 13: General view inside the stadium as Edouard Mendy of Chelsea saves from Raphinha of Leeds United during the Premier League match between Leeds United and Chelsea at Elland Road on March 13, 2021 in Leeds, England. Sporting stadiums around the UK remain under strict restrictions due to the Coronavirus Pandemic as Government social distancing laws prohibit fans inside venues resulting in games being played behind closed doors. (Photo by Lee Smith - Pool/Getty Images)
Elland Road. (Photo by Lee Smith - Pool/Getty Images) Photo: Pool
. Man United consider Brozovic bid
Manchester United are preparing a bid for Marcelo Brozovic. United are ready to pay £26 million for the Inter Milan midfielder. (Daily Star) (Photo by Stuart Franklin/Getty Images) Photo: Stuart Franklin
1. Man United consider Brozovic bid
Manchester United are preparing a bid for Marcelo Brozovic. United are ready to pay £26 million for the Inter Milan midfielder. (Daily Star) (Photo by Stuart Franklin/Getty Images) Photo: Stuart Franklin
2. Leao not keen on Toffees move
AC Milan striker Rafael Leao is not convinced by the idea of joining Everton but would be open to a move to Borussia Dortmund. (Calciomercato) (Photo by Jurij Kodrun/Getty Images) Photo: Jurij Kodrun
3. Burnley want Furlong
West Brom full-back Darnell Furlong has emerged as a transfer target for both Burnley and Brentford. (Football Insider) (Photo by Geoff Caddick - Pool/Getty Images) Photo: Pool
4. Shaqiri price revealed
Liverpool will demand at least £13million for Xherdan Shaqiri - and are braced for Lazio making an official move for the Switzerland star. (Liverpool Echo) (Photo by Anatoly Maltsev - Pool/Getty Images) Photo: Anatoly Maltsev - Pool