The three-year hold volition support the front-rower astatine the Storm until 2025. He was already nether declaration for adjacent season, but had been escaped to negociate with rival clubs from November 1 for the 2023 season.
"I emotion this club, truthful I'm pumped to beryllium staying astir till the extremity of 2025. I came down arsenic an 18 twelvemonth aged and person made immoderate lifelong friendships and memories on the way," Welch wrote connected Twitter.
The 27-year-old has played State of Origin for Queensland and had been courted by the Dolphins up of their NRL debut successful 2023.
"Special acknowledgment to my household successful Brisbane," Welch said successful a connection released by Melbourne.
"They recognize however peculiar a nine it is and person continued to enactment maine staying down here," helium said.
"I can't hold to get retired determination connected AAMI Park successful beforehand of our fans who person had it truthful pugnacious for the past fewer years."
Welch was elevated to the Storm enactment radical this season, having archetypal joined the nine successful 2013, making his NRL debut 2 years later.
"We're precise blessed that Christian has committed to this caller declaration with america that volition instrumentality his clip with Storm good past the 10-year mark," the club's Frank Ponissi said.
"He was disconnected declaration astatine the extremity of 2022 and was a precedence re-signing for us.
"Although his vocation has had immoderate setbacks, helium has persevered and continued to turn and mature arsenic a subordinate connected the tract and arsenic a person of our nine some connected and disconnected the field.
"There's nary uncertainty helium volition play a precise important relation successful Storm's future."
Welch is the 2nd Dolphins people successful arsenic galore days to re-sign with his existent club, aft Patrick Carrigan extended his declaration with Brisbane.
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