Jefferson signed a 10-day contract with the Suns on Wednesday, Shams Charania of Yahoo! Sports reports.
The Suns had an open spot available on their roster and have three forwards (Markieff Morris, Jon Leuer, and Mirza Teletovic) dealing with injuries, so it makes sense for them to bring Jefferson in as emergency depth. The 25-year-old previously appeared in six games with the Suns and averaged two points and 1.7 boards over 4.7 minutes per contest before he was waived two weeks ago.