The former Brisbane forward has returned to training early, following his involvement in the New Zealand squad with whom he won the Four Nations title.
Eastwood was not due to start training until next week, but returned seven days early to renew aquaintances within the Bulldogs squad.
He spent the 2009 season with Canterbury after a proposed move to Leeds fell through due to a visa problem.
But the 23-year-old prop struggled to settle at Headingly after making the move to the UK in 2010 and switched back to the NRL in October.
“Its good to be back,” Eastwood told bulldogs.com.au.
“I’ve been really looking forward to coming back, I turned up to training this morning and met all the boys, it was a good start.”
He added: “I met all the new boys today and they all seem really good. To have Frank there, it’s a bonus. I sort of helped to get him across, playing footy with him in the Kiwis I know how he plays, he’s going to be a real asset to the team next year.”
Bulldogs coach Kevin Moore said he was delighted to have Eastwood back in the fold.
“It’s great to have him back on board,” Moore said.
“Coming off a really successful Four Nations series with the Kiwis, I thought he was probably close to their best. All the players know what he brings to the Club and very excited to have him on board.”