Samoa Joe was recently interviewed by The Hindustan Times and spoke about some ROH stars he'd like to see in the WWE:
“I would like to see Jay Lethal and Dalton Castle join the company. Both have made their name in Ring of Honor and their addition can make WWE a very exciting place.”
Dalton Castle has been a rumoured potential signee for quite a long while now and Jay Lethal has a ton of history with Samoa Joe, having worked closely with him in Ring of Honor and TNA. It would be interesting to see if either o those two eventually make it up to the grandest stage.