The relationship between LeSean McCoy and Chip Kelly has been well documented over the course of the past year. It all began when McCoy was traded from the Philadelphia Eagles to the Buffalo Bills, and Kelly failed to talk to him about it before the move was made. That didn't sit well with McCoy, and it's been all downhill from there.

Their "reunion" last season in Philadelphia didn't make things better as the two didn't even talk to each other, with McCoy saying "Chip can't shake s---" after Kelly wanted to shake his hand.

Now, McCoy and Kelly are separated even more with the latter now the head coach of the San Francisco 49ers. Maybe the extra distance has helped smooth things over because McCoy had some (kind of) nice things to say about Kelly this week -- and shared some advice for his players.

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"Every situation is different," McCoy said. "The one thing I will say about Chip is that he wants to win. He's very, very intelligent. The offense, they'll find ways to get the big numbers. They'll find ways to put the stats up offensively. With him coming in there, no matter how good of a player or low player you are, if you just automatically believe him -- no matter if it sounds crazy, you're like what is he talking about -- if you just automatically believe and buy in, I think you'll be fine."

McCoy's comments likely come in light of the fact that many of the Eagles didn't buy in to Kelly's system, which ultimately led to his downfall. Kelly's personality and coaching style isn't like most NFL coaches. McCoy called him more "hands-on" than most coaches.

"... You shouldn't be out late, you should be already mentally focused for this game," McCoy said. "Chip's more on you. He has his thing with the sleep and different things. They're obviously a lot different but they all have the same goal."

McCoy and Kelly will come together once again this season when the Bills visit the 49ers in San Francisco. Maybe they'll actually shake hands and make up this time.