Arrighetti (foot) will resume a rehab assignment with Triple-A Buffalo on Sunday, Shi Davidi of Sportsnet.ca reports.
Arrighetti was diagnosed with Morton's Neuroma in his right foot and had to be pulled off his initial rehab assignment with the issue, but the plan is for him to receive treatment and pitch through it. The righty is slated to throw 45-to-60 pitches for Buffalo, and he could be ready to join the Blue Jays' rotation after that.