Just weeks after Zach recommitted to the club for another three seasons beyond this year, Jackson has inked a two-year contract extension.
The deal will see the 22-year-old tied to the Bombers through to the end of the 2017 season. Merrett has played four games this season for a career tally of 32 since making his debut in 2012.
“It’s very exciting to be remaining at the club for another two years,” Merrett told the club’s website.
“We’re putting in the hard yards so as long as we can keep that up I’m sure we can go somewhere exciting in the future.”