I can't tell where Jorge will be next year.
But. What i know is that back in 2012 he spoke to Honda, this bruised a few egos at Yamaha Racing and even so some there didn't want Rossi back with them (he also bruised ego when he left to Ducati, the Japanese are sensitive people behind the masks), his development skills prevailed on the decision together with the commercial Dpt weight.
From then on Lorenzo was in hot waters, Yamaha Racing no longer could count on him to stay if they had another title loosing year, they knew he had his own agenda, they made their mind up and now have theirs.
The RCV is better on the brakes, turning-in and turning on the brakes as well as acceleration, as all 2014 partials demonstrates and Yamaha could no longer rely on corner speed only, on top of which all other riders than Jorge had a torrid time riding the M1 100% since 2011.
For those who followed the season though MCN these are well known facts if not, search on this website archives from the 2013 proto roll out.
Now IMHO, Honda saying they are interested is half-political, they can provide him with a different chassis but i doubt they will make a 250 styled M1 copy, first they don't know how to, second they have Marquez and his winning style prevails with their design and development Dpt.
So from their PoV, taking Jorge from Yamaha is all win, if he wins with them, it's good, if not, they have one concurent left at Yamaha.
For Ducati i have no idea if they would even be capable of providing him with the chassis he wants, they are already struggling to make progresses with a formula they knew could win when Stoner was there, anyone who knows Ducati better than me (more than a few people i believe) might bring some insight on this one.