MSNBC's Donny Deutsch says Michael Cohen is out for revenge against Jared Kushner and Donald Trump Jr.

Michael Cohen has been revealing all he knows about President Donald Trump and his family to investigators -- and MSNBC's Donny Deutsch said they should be worried.

The longtime Trump attorney has been talking to Robert Mueller about Russia collusion, and Vanity Fair reporter Emily Jane Fox told MSNBC's "Morning Joe" that Cohen is talking to federal prosecutors about possible campaign finance violations and the New York attorney general about the Trump Foundation.

"There is nothing that is off-limits to Michael," said Fox, who speaks regularly with the attorney.

Fox and other panelists agreed Trump made a big mistake by cutting Cohen loose, and New York Times reporter Jeremy Peters said that betrayal put the president's three oldest children in legal jeopardy.

"He's the one guy, other than his children, one of the one guys who felt any loyalty to this man," Peters said. "Speaking of the children, it's not just Donald Trump who is exposed now, because Michael Cohen is talking to investigators and Robert Mueller. It's the children are now in focus because he was in the middle of it all."

Cohen has not cut a cooperation deal but is working with prosecutors in hopes of getting a lighter prison sentence, and Fox said that creates an awkward dynamic within the Trump family.

"Look, Michael Cohen still lives in the building where Jared (Kushner) and Ivanka (Trump) live in New York," Fox said. "This is someone who is so inextricably tied and linked to the entire Trump family, who worked side by side with all three of his adult children."

Cohen feels hurt that Trump's children have thrown him under the bus, and MSNBC's Donny Deutsch said that opened up some deep-seated resentment against Kushner and Donald Trump Jr.

"I think he's been more loathing towards Junior and Jared, particularly Junior, because there was this built-in affection for the boss for a long time," Deutsch said. "There's that scorned feeling, but his brow would even furrow more when he would talk about the kids."

"But to the opening tease, Trump has a lot to worry about -- a lot," he added. "Emily and I have been privy to a lot of the things Cohen knows, and boy, oh, boy."