Matt Guelfi will undergo surgery for a fresh hamstring strain, sidelining him for 10-12 weeks.
"'Guelf' was progressing well in the rehab of the injury he sustained pre-Christmas, so it's really disappointing to see him suffer another setback," Bombers footy manager Daniel McPherson said.
"While surgery will keep him sidelined for the next few months, we're confident we'll get to see 'Guelf' back out there playing plenty of strong footy for us this season."