I've read that today, as well, though he's evidently downplaying it (smart move).
Honestly IMO, if he does this, it's curtains for Bloomberg and his campaign. Should he even remotely win the primary to advance ahead to go up against Trump, it isn't going to happen for Bloomberg. He won't become POTUS.
Prediction for sure on my part but I think any Democrat candidate that would consider Clinton as a running mate should they win the Primary needs to throw the notion out the window.