There's a lot that goes into that compensatory pick. Not least of which being what free agents we sign that year, how much money Ronnie Brown gets from his new team, how many games he starts and how well he does in his new home.
You don't bank on that 3rd round compensatory, no way.
I don't know they'll even want him back on a cheaper short term deal. Any given year, I'm not sure they believe they can trust him to play 16 games. They don't like guys like that. Justin Smiley would still be here if they could accept that kind of uncertainty and just chalk it up to a "any game he plays is a bonus" line of thinking.