In the top 10, possibly the 49ers depending on who they hire and whether the guy wants Kaepernick or not. No way the Cowboys trade up for a QB.
Outside the top 10 there's the Bears, Saints, Eagles and Rams at 11,12,13 and 15 who could be in the market for a QB.
You'd pretty much have to trade back but stay in the top 10 and hope one of the two between Dallas and San Francisco doesn't draft a QB.
If you want to choose your QB, then you can't go further than #3. Give the Chargers a call to trade back and they'll know you're taking a QB, so they'll stay put at 3. So my take is that you either draft your guy at #2 or trade back if you can to get a bunch of picks and take BPA, hoping Carson Wentz or Connor Cook are still on the board at 32.