This trade, as described by the article, can't happen, as Ross is in the last year of his contract. The deadline for such a trade passed months ago.
What can happen is that Washington can simply absorb Yi's contract, thanks to a trade exception from the Drew Gooden trade during last season. Washington can send a conditional 2nd round pick, or, if they are feeling generous, the rights to one of their picks from last week's draft.
Chad Ford reports that the Wizards are also getting $3 million from New Jersey.