LeSean McCoy hung up on Chip Kelly when he called Tuesday

Even though Sunday's game between the Eagles and Bills has big postseason implications, the LeSean McCoy vs. Chip Kelly subplot has overshadowed everything else.

McCoy is making his return to Philadelphia for the first time since being traded by the Eagles in March, and his relationship -- or lack thereof -- with Kelly has been well-documented. Kelly said he would like to shake McCoy's hand Sunday and has tried to contact him by phone, but LeSean has been unresponsive.

According to Jeff McLane of Philly.com, McCoy on Tuesday answered Kelly's phone call after he didn't recognize the number. Once Kelly identified himself, McCoy hung up. 

FOX Sports NFL insider Mike Garafolo confirmed the report, and added that Kelly called back "a few times" and was "intent on burying the hatchet."

It is clear Shady wants nothing to do with his former head coach. And Kelly admitted that McCoy is "rightly" upset over how the trade was handled.

There's little doubt McCoy would love to have a big game against his former team -- and more importantly, his former head coach -- on Sunday.