It's possible, because of the switch we made and because of Marinelli, but I don't think it's too likely.
Melton is a terrific player for this defense, but he would cost a whole lot, I'd bet and while I do think we will clear up space to sign some guys, I don't think we would blow it all in one spot like that for Melton.
If you look at our needs, you could list DT and OG as 1a and 1b. Now, if you look at the cost of signing an upper tier free agent at each of those positions, guard would be a good bit less expensive. For that reason, I think it is more likely for Dallas to sign a free agent OG or C and to look to the draft to fill any DT position.
To take that thought further, Dallas likes to use first round picks on DL and they particularly don't like to use first round picks on the interior OL. So, getting Melton in free agency would take DT out of the equation in the first round and increase the likelyhood they would have to use a first at Guard.
It just makes more fiscal sense to go G in FA and DT in the draft. Either way we end up with a starter in FA on one line and a first round pick on the other line. Except one way we spend a lot more money.
Of course, that could all be wrong if they think Melton is extraordinary enough and too good of a chance to add a blue chip player... but I think it is probably closer to what will actually happen.
JMO, of course.