Joe Koff, the COO of Ring of Honor, was recently on the WrestleZone Podcast and talked about CM Punk and how he would welcome him with open arms into the company:
CM Punk would be an unbelievable addition for Ring of Honor. I don’t know where that would be or could be. It would be a dream. Wrestling talent knows this: once you are a part of Ring of Honor you are always a part of Ring of Honor. Our door is always open to people who want to come back and perform at our level, with our style and for our fans. That would be a dream. That would be unbelievable.
Koff also confirmed that he's had loose contact with Punk lately:
CM Punk, if you’re listening or reading, I hope you are, you are always welcome in our house. You know that. He knows that. We’ve had conversations in the past through people. He knows that there is a welcome sign for him.