Jason Byrne signs on for second spell at Bohemians
Byrne returns to Dalymount Park after winning back-to-back titles with the Gypsies n 2008 and 2009.
"Jason has that killer instinct up front that we missed last season," Heary told the club's official website. "People talk about age but look at how he did with Bray [Wanderers] last year; he scored 17 goals in all competitions, which is a tremendous tally for any striker."
He added: "The younger lads will gain so much from him too. His movement, positioning, technique; the lads will be watching and learning from him every day in training."
Byrne's League of Ireland career has seen him score over 200 goals between stints with Bray Wanderers, Shelbourne, Dundalk and Bohemians and Heary is hoping that the former Republic of Ireland international can eclipse Brendan Bradley's record of 235 goals during his time with the Gypsies.
"I would love him to do it at Bohs," said the Bohemians boss. "That was the real motivating factor in him coming back.
"I know he's a legend at Bray too but I think he would really love to do it at a club like Bohs having had so much success here before.
"It's something that is really in his sights now and I really believe he can do it in the next two years."