The righty reliever will throw a side session on Sunday, his first since he was placed on the disabled list back on July 16 for the third time this season.
"It's obviously in pencil," said Francona. "I think the last couple of times, we've reached a little quick and it's gone backward. He'll throw a 'pen [session] Sunday. If that goes OK, then when we go on the road, we'll probably send him to Fort Myers, [Fla.], so he doesn't have to travel. And he's going to throw some 'pens and get into some simulated games, things like that, before he would head to Pawtucket."
Expected to join Daniel Bard and Jonathan Papelbon as one of the top 1-2-3 bullpen punches in the Majors, Jenks has been a non-factor for most of his first season in Boston, thanks to injuries.