Obviously this may change based on MLB teams' evaluations.
Our process from the coaching staff prior to making a scholarship offer is to get the kid to give an honest dollar amount that he would sign for. For some, it's $500k, others it's $5 million. Then the coaches will do their own evaluation/ask around MLB teams a potential dollar amount for the kid. If the kid will sign for $500k and the coaching staff feels he could get that in the draft, they probably will stop recruiting. If the kid is asking for $3 million and they feel he could only get a million in the draft, they will probably sign him.
Jones was a big time recruit for a few years now, my guess is that he's got a pretty big price tag (see D. Fisher) and even though he'd probably get close to over a million in the draft, he probably values the 3-year college experience more.
I would say the chances are high that he'll end up on Grounds, unless he blows up this spring and some team decides to make him a top 20 pick and pay that man his money.