Green's absence a concern, Celtics and Posey to talk

Also, is E’Twaun Moore the Celtics' best player? No, but.. Yeah, he wishes. ESPNBoston.com Despite inking a one-year, $9 million contract at the start of free agency, Green has been held out of practice due to a medical red flag that appeared during his routine physical. Both the team and Green initially downplayed the significance, but Rivers admitted that each day that passes makes it a bigger issue in his mind, especially in a condensed preseason. "It is a concern. It's a big concern," Rivers said. "Whenever anything is red-flagged and they've got to redo [medical tests], you get concerned. But we just have to wait and see." Rivers hinted the results of those follow-up tests might be in, but that a consultation with additional doctors could be delaying the process. Asked how Green was handling the situation, Rivers admitted it was challenging for the player. "Not great. One of the reasons he came in the day before [camp started last wee...